Definition
to conceal oneself to avoid being found by police, military personnel, etc.
躲藏；隱藏
During the police hunt, he chose to lie up at an old friend's house.
在警察追捕期間，他選擇躲在一位老朋友的家裡。
She decided to lie up at home until things calmed down, avoiding being found.
她決定躲在家裡，直到情況平靜下來，避免被找到。
To escape military pursuit, the deserter lay up in the mountains for several weeks.
為了逃避軍方的追捕，這名逃兵在山裡躲了好幾個星期。