Jn
abbr. 扭振减震器总成；供应臭氧设备；约翰（John）；珍妮（June）
🗣️ 情景例句
get some background on the job.
了解这项工程的一些背景。
It is said that a new policy is being put into practice in your foreign trade.
据说你们正在实施一种新的对外贸易政策。
and the existence of underwater features of considerable magnitude.
水下特征差异极大。