Plss
abbr. 携带式生命保障系统（Portable Life Support System）
🗣️ 情景例句
Do we have to pre-book tours, or can we get them on site?
我们必须预定行程， 还是到那个地方再说？
He made a successful career in business.
他的商务生涯十分成功。
Our foreign trade policy has always been based on equality and mutual benefit and exchange of needed goods.
我们的对外贸易政策一向是以平等互利、互通有无为基础的。