lock
n. / v.美 /lɑk/英 /lɒk/
锁；锁上
a device that keeps something closed / to fasten with a lock
例句
I forgot the key and can't open my locker.
我忘了带钥匙，打不开自己的储物柜。
Please lock the classroom door before you go home.
回家前请把教室门锁好。
怎么记
lo（落）+ ck（扣）→落下扣子就锁住了
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