n. the customary manner in which a language (or a form of a language) is spoken or written
n. 用法, 使用, 习惯, 惯用法, 习惯法
[经] 使用情况, 使用用途, 惯例
1. The usage of smartphones has increased dramatically in recent years.
智能手机的使用在近年来急剧增加。
2. Please check the usage instructions before operating the machine.
在操作机器之前，请查看使用说明。
3. Proper usage of language is important for clear communication.
正确使用语言对于清晰沟通很重要。