1. 吞下;咽下
    If you swallow something, you cause it to go from your mouth down into your stomach.

    e.g. You are asked to swallow a capsule containing vitamin B...
           你要服一粒维生素 B 胶囊。
    e.g. Polly took a bite of the apple, chewed and swallowed.
           波利咬了一口苹果，嚼了嚼咽了下去。

2. (常因为紧张或恐惧而)做吞咽动作，咽口水
    If you swallow, you make a movement in your throat as if you are swallowing something, often because you are nervous or frightened.

swallow

    e.g. Nancy swallowed hard and shook her head.
           南希用力咽了口口水，摇了摇头。

3. 完全相信;信以为真
    If someone swallows a story or a statement, they believe it completely.

    e.g. It was vital that he swallowed the story about Juanita being in that motel room that night.
           关键是他对朱厄妮塔那晚住在那个汽车旅馆房间里一事毫不怀疑。
    e.g. I too found this story a little hard to swallow.
           我也觉得这件事有点难以置信。

4. 掩饰，抑制(感情)
    If you swallow your feelings, you do not express them, although you want to very much.

swallow

    e.g. Gordon has swallowed the anger he felt...
           戈登忍住了内心的愤怒。
    e.g. He flashed me a quick grin but rapidly swallowed it when he saw my expression.
           他先是冲我咧嘴一笑，不过看到我的表情后又赶紧收起笑脸。

5. 燕子
    A swallow is a kind of small bird with pointed wings and a forked tail.

6. a bitter pill to swallow -> see pill
    to swallow one's pride -> see pride

相关词组：swallow up