布鲁斯挂上慢档，把两只前轮分别搁在裂缝的两边，顺着弯弯曲曲的裂缝，以发疯的速度向前开去。

engage这个词使用很普遍

as 这里是引导时间状语从句。。

第38课 The First Calendar

1、 Future historians will be in a unique position when they come to record the history of our own

times.

未来的历史学家， 将在一种得天独厚的环境中记载我们时代的历史。

2、 Even seemingly insignificant remains can shed interesting light on the history of early man. 即使看起来微不足道的遗物，也可能揭示人类早期历史的一些有趣的内容。

3、 They have found that it is connected with the passage of days and the phases of the moon.

他们发现代码与昼夜更迭和月亮圆缺有关，

passage 和phases。。用法。。多学习啊。。。

第37课 The Westhaven Express

1、 We have learnt to expect that trains will be punctual.

我们已经习惯于相信火车总是准点的。

表示习惯于的。。不要总是 used to … habit什么的了。。

2、 Ships may be delayed by storms; air flights may be because of bad weather; but

trains must be on time.

可以用来举例说明比较各种运输工具的缺陷。

cancel这个词。。看出来是个高频词了吧。。。

3、 The truth is that when mistakes occur, they are more likely to be ours than theirs.

其实，当真发生差错时， 往往是咎由自取。

4、 When I boarded the train, I could not help noticing that a great many local people got on as

well.

上车后，我不禁注意到许多当地人也上了车。

5、 There was a note of triumph in my voice when I told him that it was there in black and white. 我带着一种胜利者的调子告诉他那趟车白纸黑字，明明白白印在时刻表上。

第36课 A Chance in a Million

1、 Franz poured scorn on the idea, …

弗朗兹对此不屑一顾