?? 詞語組成解析
genus
['d?i:n?s]
n. （動植物的）屬;類;種;型;
??? 情景例句
I need some good photos for my advertising, Mr. Stewart.
我做廣告需要一些好照片， Stewart先生。
Can you tell one from the other?
你能區別哪個是哪個嗎？
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年內走的距離，