?? 詞語組成解析
n. 小瀑布；葉棚（cascade的復數）
frog
[fr?ɡ]
n. 青蛙;〈侮辱〉青蛙佬，對法國人的蔑稱;[交]鐵路轍叉;飾扣，掛環;
??? 情景例句
I wonder how he is making out in his new job.
不知他新工作做得怎么樣。
How many slices are you going to use?
你要用幾片？
Half an hour later, another man struck a match for a cigarette and this time the whole of the inside of the ship caught fire.
半小時后，又一個工人擦亮火柴想點支香煙，這下整個船艙都起了火。