名詞 usage:

1. the act of using
   同義詞：use, utilization, utilisation, employment, exercise
2. accepted or habitual practice
   同義詞：custom, usance

1. Not in correct usage.
   不合規(guī)則的用法錯誤的
2. In writing one has to conform to usage as well as to the rules of grammar.
   寫作時既要遵守語法規(guī)則，又要符合習(xí)慣用法。
3. Languages develop continually through usage.
   語言在使用中不斷發(fā)展。
4. The tractor had been damaged by rough usage.
   這輛拖拉機因使用不經(jīng)心而損壞了。