prep.

1. 在……下面，在……下方；在……裡面
   What are you wearing under your coat?

   你外套裡面穿什麼？

   They were playing chess under the tree.

   他們在樹下下棋。

2. 少於；低於；未滿
   The truck was traveling under fifty miles per hour.

   那輛卡車以每小時不到五十英里的速度行駛著。

3. （表從屬）在……的管理（或統治、領導、監督）之下
   We work under an experienced engineer.

   我們在一位經驗豐富的工程師手下工作。

4. 正在……之中；正受到；處於……情況之下
   The plan is still under discussion.

   這個計畫尚在討論中。

5. 根據，按照
   Under the new regulations this is permissible.

   根據新的規章制度，這是可以的。

6. 由於，因為
7. 屬於，歸入
   What do bats come under?

   蝙蝠歸屬在哪一類？

ad.

1. 在下面，在下方
   The boat went under.

   那艘船沉下去了。

2. 從屬地；服從地
3. 更低，更少，更小
   Applicants for the job must be thirty and under.

   申請這一工作的人年齡須在三十以下。

a.

1. 下面的，下方的
   Tom had a fall and his under lip began to swell up.

   湯姆跌了一跤，下脣開始腫起。

2. 下級的，從屬的
3. 更低的，更少的，不足的

prep.

1. extending or directly below.
   ▸below or behind so as to cover or protect.
   ▸planted with.
2. at a lower level, layer, or grade than.
3. expressing submission or subordination.
   ▸as provided for by the rules of; in accordance with.
   ▸used to express grouping or classification.
4. lower than (a specified amount, rate, or norm).
5. undergoing (a process).

adv.

1. extending or directly below something.
2. affected by an anaesthetic; unconscious.