台湾籍旅美老师今天交给我们的句子是：

Many scientists believe that the extinction of dinosaurs was caused by an asteroid the size of a small town crashing into what is now Mexico’s Yucatan peninsula.
很多科学家认为恐龙的灭亡，是由一颗与小镇一样大的行星，撞击现在的墨西哥犹加敦半岛地区而导致的