Last year the millionth truck rolled off the assembly line.

去年，第100万辆卡车驶下了装配线。

The bomb must explode within less than a millionth of a second.

那枚炸弹必须在百万分之一秒内爆炸。

In order to make a nuclear explosion, the critical mass must come together within a fraction of a millionth of a second.

为促成一次核爆炸，临界质量必须在一百万分之一秒内聚集在一起。

Extracting information about the large-scale composition of a planet from a sample weighing a millionth of a gram was a fascinating example of scientific endeavour.

从重量为百万分之一克的样品中提取有关行星宏观组成的信息是一个极为有趣的科学尝试实例。

It ain't a millionth part of it!

那不是它的百万分之一！