释义
n. 燕子 vt. 吞下,咽下,忍受 vi. 咽口水
例句
1. She was swallowed up by the crowd and we lost sight of her. 她淹没在人群之中,我们看不到她了。 2. There are many swallows flying in the sky. 天空中有许多燕子。