共同遵守的条文；说定的事clause; agreement

• 和约

  peace treaty

• 立约

  make a contract

• 违约

  break a contract

• 践约

  keep an agreement

• 我们有约在先。

  We have a prior engagement.

参见：约定[yuēdìng]

• 约一个日子

  arrange a date

参见：约请[yuēqǐng]

• 约朋友来吃饭

  invite friends to dinner

限制；拘束to limit; to restrict

• 制约

  restrict

俭省to economize

参见：约分[yuēfēn]

• 5/10可以用5约成1/2

  5/10 can be reduced to 1/2

简单；简要simple; concise

• 由博返约

  go from the wide-ranging to the concise

参见：约莫[yuēmo]

• 约一年

  about a year

• 约五公斤重

  about 5 kg in weight

• 约十公里

  about 10 km

• 生产增长了约百分之二十。

  Production increased by about 20%.

• 参加大会的约有两千人。

  Some two thousand people were present at the assembly.

• 他看上去约五十岁。

  He looks about fifty.