vt.

1. 帮助，救助，支援[O2][（+in/with）]
   She made no effort to aid Sophia.

   她根本不去帮助索菲娅。

2. 有助于
   A good dictionary can aid language learning.

   一部好词典有助于语言学习。

vi.

1. 帮助

n.

1. 帮助，救助，援助[U]
   He should be able to read this without the aid of a dictionary.

   他应当能够不用字典就读懂这个。

2. 帮助者；助手[C]
3. 有辅助作用的事物[C]
   a visual aid

   视觉教具

4. 助听器[C]
5. 【美】副官[C]

n.

1. help or support.
2. material help given to a place in need.
3. historical a grant of subsidy or tax to a king.

v.