Tuitional
a. 讲授的, 学费的
🗣️ 情景例句
Never pump gas with the engine running.
发动机在运转时，别加油。
How much does it cost to rent a mid-size car?
租一辆中型汽车要多少钱？
The platforms extend to a depth of over 100 feet under the sea.
平台深入海底100英尺。