Bca
abbr. 波音民用飞机集团（Boeing Commercial Airplanes）；美国台球联会（Billiard Congress of America）；（新西兰）商业与管理学士（Bachelor of Commerce and Administration）；总线周期精确（Bus Cycle Accurate）
🗣️ 情景例句
He was ill at ease with people whom he didn't understand.
他和不熟悉的人在一起感到不自在。
How are you going?Are you going by boat?
你怎样去?坐船去吗？
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的学生都是开车的能手，但在驾驶公共汽车之前，他们必须通过一项专门测验。