Tetramethylated
四甲基化的
??? 情景例句
How are you doing?
你好嗎？
The wish is father to the thought.
有愿望就有信念。
The student did in an archway nearby where he could watch and hear everything that went on.
那個學(xué)生躲在附近一拱形的門廊里，在那兒可以看見、聽到現(xiàn)場發(fā)生的一切。