usage

名词 usage:

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

1. Not in correct usage.
   不合规则的用法错误的
2. In writing one has to conform to usage as well as to the rules of grammar.
   写作时既要遵守语法规则，又要符合习惯用法。
3. Languages develop continually through usage.
   语言在使用中不断发展。
4. The tractor had been damaged by rough usage.
   这辆拖拉机因使用不经心而损坏了。