episode49

1. slow-growing,生长速度慢的。

2. have a hard time,在某方面（某事情）上会有困难；have a hard time后要跟动名词。

You will have a hard time getting a ticket.
你要买到票是很困难的

3. species，种类，种。注意species的单复数都是species。

There are many species of chrysanthemum.
菊花品种很多。
The giant panda has become an endangered species.
大熊猫已成了一种濒临灭绝的动物。

4. die out,逐渐消失,灭绝。
Many old customs have died out.
许多旧的风俗已不复存在。

节目片段节选自CNR
剪切：蒋健棠
编辑：蒋健棠
主讲：蒋健棠

“欢迎转载这系列节目，但请注明来源为可可听力网-[蒋健棠教你听英语广播]”