Yes, he is not a very exciting speaker. But the subject is interesting.

对，他并不一个很有感染力演讲者，但这门课还挺有趣。

You can see the father of the bride teary-eyed making an emotional speech.

你可以看到新娘父亲热泪盈眶地发表很有感染力婚礼致辞。

Also, a study tip: when you're making your own examples of these expressions, it really helps with memorisation if your example is funny, scary, or emotional in some way.

另外，一个学习窍门：当你自己用这些词造时候，如果你造、恐怖或有感染力，那么这真有助于记忆。

Their second album, The Score, was equal parts reggae, rap, and soul, with infectious laid-back beats and often political lyrics about injustice.

他们第二张专辑《The Score》由雷鬼、饶舌和灵魂乐三部分组成，有富有感染力悠闲节奏，经常有关于不公正政治性歌词。

Yes, he is not a very exciting speaker. But the subject is interesting.

对，他并不一个很有感染力演讲者，但这门课还挺有趣。

I wouldn't say my laugh is all that unusual, but I guess to a family member it's infectious.

我不说我声那么与众不同，但我觉得对家人来说，它有感染力。

Howard Thurman was such a dynamic speaker.

霍华德·瑟曼一位如此有感染力演讲者。

Any individual could originate an infectious idea.

任何个人都可能发起一个有感染力想法。

And again, I think the fact that they're so consistent, it can be easy to take that for granted and say, well, why don't they have catchier songs like they did in the past?

而且，我认为他们如此稳定，很容易被忽视，人们会说，为什么他们不像过去那样写出更有感染力歌曲呢？

For a girl from Pennsytvania, she had learned to sing like a Tennessean, and the joy in her twang, was infectious.

对于一个来自宾夕法尼亚州女孩来说，她学会了像田纳西人一样唱歌，她嗓音中快乐有感染力。

The choice of the storybook is very important; if a teacher is enthusiastic, often this is contagious.

故事书选择非常重要；如果一个老师很热情，这通常有感染力。