This is the condition for really the lion's share of chemistry, biology, and other kinds of changes we'll be concerned with.

这就是绝大部分,生物变化，化学变化，和其他变化所关心的条件。

麻省理工公开课 - 热力学与动力学课程节选

Now that's a good thing when a lion charges me.

有狮子朝我冲来时是件好事。

哈佛公开课 - 幸福课课程节选