A2 the one(s) belonging to or connected with me我的（所有物）；属于我的（东西）；与我有关的（人）
He's my sister's friend really, not mine.
Please could you back your car up a few feet so that I can get mine out of the drive?
Here, your eyes are better than mine - could you thread this needle for me?
Could I borrow a pen? I've lost mine.
Pat's a great friend of mine.
B2 a hole or system of holes in the ground where substances such as coal, metal, and salt are removed矿，矿井
The minister maintained that the mines were uneconomic and would have to be closed.
The nuclear waste is encased in concrete before being sent for storage in disused mines.
He had worked in the diamond mines of South Africa.
All the mines in this area were closed down in the 80's.
The government was severely criticized for its decision to close the mines.
a type of bomb put below the earth or in the sea that explodes when vehicles, ships, or people go over it地雷；水雷
They had laid mines across the road.
Her leg was blown off when the mine exploded.
We do not know if there are mines in the area.
[ I or T ] to dig coal or another substance out of the ground采，开采（煤等）
[ T often passive ] to place or hide mines in an area of land or sea布雷于