本集核心英语单词及例句：

1.cycling (n.)骑脚踏车兜风
One of Joe's favorite hobbies is cycling in the countryside.
Joe最喜欢的业余爱好之一是在乡村骑自行车。

2.avid (adj.)狂热的
What are some things that you are an avid fan of?
什么可以让你成为一个狂热粉丝？

3.be impressed by (对）印象深刻
We are all very impressed by Zoey's excellent teaching.
我们都对Zoey精彩的教学印象深刻。

4.sophisticated (adj.)复杂的
Patricia's speech contained a number of extremely sophisticated vocabulary words and expressions.
Patricia的演讲中包含了一些极其复杂的词汇和表达方式。

5.passionate (adj.)充满激情的
Mark is extremely passionate about his teaching.
Mark对自己的教学充满激情。

6.guarantee (v.)保证
If you learn these words and watch ten Dr. J Show videos a day, I guarantee that your English is going to improve in no time at all.
如果你学这些单词，每天看十个J博士秀，我就保证你的英语一定能提高。

7.reflective (adj.)反射的
Whenever we ride our bicycles, we always wear as much reflective material as possible to avoid being hit by cars.
每当我们骑自行车时，我们总是尽可能地穿上反光材料，以避免被汽车撞到。

8.gear (n.)齿轮
We shop at the "Big D" on a daily basis to get as much cycling gear as possible.
我们在Big D上购物，每天尽可能多买一些自行车齿轮。

9.cranium (n.)头盖骨
The lucky boy stopped just in time to avoid a serious accident; he should be really thankful that he didn't break his cranium.
那个幸运的男孩停了下来，正好避免了一次严重的事故；他应该很庆幸他没有打破他自己的头盖骨。