1. 吮;啜;吸
    If you suck something, you hold it in your mouth and pull at it with the muscles in your cheeks and tongue, for example in order to get liquid out of it.

    e.g. They waited in silence and sucked their sweets...
           他们安静地等着，嘴里咂着糖果。
    e.g. He sucked on his cigarette...
           他抽了一口烟。

2. 抽吸，抽取，抽，吸(空气、液体等)
    If something sucks a liquid, gas, or object in a particular direction, it draws it there with a powerful force.

    e.g. The pollution-control team is at the scene and is due to start sucking up oil any time now...
           污染控制小组就在现场，现在随时准备开始吸油。
    e.g. The air is sucked out by a high-powered fan...
           由强力风机把空气吸出去。

3. 将…卷入
    If you are sucked into a bad situation, you are unable to prevent yourself from becoming involved in it.

    e.g. He warned that if the President tried to enforce control, the country would be sucked into a power vacuum.
           他警告说，如果总统想要实施强权统治的话，那么这个国家将陷入权力真空状态。
    e.g. ...the extent to which they have been sucked into the cycle of violence.
           他们卷入暴力恶性循环的程度

4. 糟糕透顶;很差
    If someone says that something sucks, they are indicating that they think it is very bad.

    e.g. The system sucks.
           这个系统太差劲了。

5. to suck someone dry -> see dry

相关词组：suck up