B2 not suitable or good enough for a particular purpose or activity不适合的,不恰当的
B1 mainly UK not healthy because you do too little exercise不健康的
More examples
I felt so unfit after Christmas that I decided to join a gym.
The meat was clearly unfit for human consumption .
Simon is so unfit - he gets breathless just from walking up a flight of stairs.
They accused the government of being unfit to govern.
The judge ruled her an unfit mother.
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net
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