?lain的中文翻譯是“躺”，是動詞lay的過去分詞形式，也可以作為名詞使用。

用法：

1. 作為動詞，lain用來表示某人或某物放置在水平的表面上。

2. 作為名詞，lain指的是躺著的姿勢或狀態。

例句：

1. She has lain on the bed for hours, unable to fall asleep.

她已經躺在床上幾個小時了，無法入睡。

2. The cat has lain in the sun all day.

這只貓整天都在陽光下躺著。

3. He was found lying on the ground, his body completely still.

他被躺在地上，身體完全靜止。

4. The patient has lain in a coma for weeks.

這位病人已經昏迷了幾個星期。

5. The book lay open on the table, its pages fluttering in the breeze.

書展開放在桌子上，頁頁隨風飄動。

同義詞及用法：

1. recline：指某人或某物以舒適的姿勢倚靠或放置在某物上。：She reclined on the sofa and watched TV.

2. lie down：指某人主動地躺下。：I'm tired, I'm going to lie down for a while.

3. rest：指休息、放松身心。：After a long day, he likes to rest on the couch.

4. repose：指某人或某物靜靜地躺著。：The statue of Buddha is in a state of repose.

5. sprawl：指某人或某物無序地躺在某處。：The kids are sprawled out on the floor, playing with their toys.