Soas
(soa 的复数) abbr. 前进速度（speed of advance ）；工艺技术水准（state of the art）；进场著陆速度（speed of approach）；工艺现状（State of the Art）
🗣️ 情景例句
How long does it take you to get through a letter?
你写一封信要花多少时间？
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。
'You'll have to get off here,' the conductor said.
“您得在这里下车，”售票员说，