know ... like the back of one's hand
形容对某人了如指掌,非常了解,非常熟悉。
know...like the back of one's hand
我在待了五年,对这座城市了如指掌。
I have been here for five years. I know the city like the back of my hand.
我们从小一起长大,我对她了如指掌。
We grew up together. I know her like the back of my hand.
我对电脑了如指掌。
I know computers like the back of my hand.
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