Topdown
adj. 由上而下的
??? 情景例句
How can you do business with the americans? You'll need to improve your English first.
你怎么能與美國人做生意？你得先提高自己的英文水平。
Did you make sesame cakes yourself?
你自己親自做燒餅？
He had been the first to turn a telescope to the sky,
他是第一個把望遠鏡對準天空的人，