Cavosurface
[医] 洞面
🗣️ 情景例句
He prays every night before sleep.
他每晚睡觉着都祈祷。
To sink
沉下
Soon afterwards, the balloon began to descend and it landed near an airfield.
不久，气球开始降落，在一个停机坪附近着了陆。