A2 [ I ] to suddenly go down onto the ground or towards the ground without intending to or by accident（突然）跌倒，摔落
to fall and land with your face down脸朝下跌倒，趴倒在地
Keep away from the edge of the cliff - you might fall.
Hold onto the rail so that you don't fall.
They were mocking him because he kept falling off his bike.
She knocked her head against the wall as she fell.
We heard a splash and then saw that Toni had fallen in the river.
B1 [ I ] to become lower in size, amount, or strength（规模、数量或力量）减少，降低
The temperature has fallen below zero recently.
Inflation has fallen below 2%, and that's official.
The flood waters fell, depositing mud over the whole area.
Many economists expect unemployment to fall over the next couple of months.
If your bank account balance falls below the minimum, you'll be nicked for a $5 service charge.
A2 [ I ] to come down onto the ground or from a high position to a lower position落下；降落
to go down on your knees to show respect下跪（表示尊敬）
[ I ] When the curtain falls in the theatre, it comes down because the play or performance has ended.落幕；（戏剧或演出）结束
Although the curtain has now fallen on the Republican era, many of its values still remain.
The fact that aircraft don't fall out of the sky always seems to me to defy the law of gravity.
The satellite will fragment and burn up as it falls through the earth's atmosphere.
Her luxuriant hair fell around her shoulders.
Rain had been falling steadily all day and the ground had become a marsh.
[ I usually + adv/prep ] to belong to a particular group, subject, or area属于（某一群体、学科或领域）
They believe that all the outstanding issues should fall within the ambit of the talks.
What genre does the book fall into - comedy or tragedy?
This case falls outside the purview of this particular court.
The matter falls outside his area of jurisdiction.
This research paper falls outside my own area of expertise.
B1 [ I + adv/prep, L ] to change to a particular condition from a different one变成（某状态）
They let the palace fall into ruin.
The buildings had started to fall into decay.
He fell unconscious shortly after the accident.
Sophia fell ill while on holiday.
After we'd explained about the change of plan, the children fell strangely quiet for a minute or two.
C2 [ I ] to be beaten or defeated被打败；被击垮
C2 [ I ] If a place falls in a war or an election, an enemy army or a different political party gets control of it.沦陷，失守；落败
[ I ] literary If soldiers fall while fighting, they are killed.阵亡，战死
[ I ] UK In cricket, when a wicket falls, the turn of the player who is hitting the ball ends.（板球）击球手被杀出局
C2 [ I ] to come at a particular time or happen in a particular place落，降临；发生
C2 [ I usually + adv/prep ] to hang down loosely下垂，低垂
If your face falls, you suddenly look unhappy or disappointed, and if your spirits fall, you suddenly feel unhappy or disappointed.脸色变阴沉／情绪变低落
B1 [ C usually singular ] the fact of the size, amount, or strength of something getting lower（规模、数量或力量的）减少，降低
The last ten years have seen a dramatic fall in the number of adoptions.
The City acted swiftly to the news of a fall in the value of sterling.
Yesterday the company announced its first ever fall in profits.
The fall in interest rates is excellent news for borrowers.
There was a larger-than-expected fall in unemployment last month.
[ C or U ] US UK autumn the season after summer and before winter, when fruits and crops become ready to eat and the leaves fall off the trees秋季，秋天
In the fall, everyone is out raking up the dead leaves.
The garden is a blaze of colour in the fall.
They plan to get married in the fall.
Check out our new catalog for all the latest fall and winter fashions.
We were planning a trip to Europe next fall.
B2 [ C usually singular ] the act of falling down to the ground, usually without intending to or by accident跌倒；跌落；倒下
The soft grass cushioned his fall.
I was in no mood for heroics after my fall and skied very slowly down the mountainside.
The horse broke its front leg in the fall.
He spent the last ten years of his life in a wheelchair after a fall which left him paralysed from the waist down.
After her fall she complained that she couldn't bend her leg properly.
[ C usually singular ] an amount of something that moves down onto the ground or from a higher position to a lower position降落
often used in place names to mean a very wide waterfall, often made of many separate waterfalls瀑布
C1 [ C usually singular ] the fact of being defeated or losing your power沦陷；灭亡；垮台，失势