Obss
abbr. ocean bottom scanning sonar 海底扫描声呐
🗣️ 情景例句
I have learned to use computers and have become familiar with all clerical duties.
我学会使用电脑及熟悉所有文员的工作。
I guess that's Ok. What time should I check in?
我想这正合适。我应该什么时候去办理登机手续呢？
Good morning, class.
同学们，早上好。