How many four-digit positive integers have their product of digits even?

A rational number can be expressed as a ratio of two integers.

有理数可以被整数整除.

The construction of the square roots of all integers is simple.

所有整数的平方根的结构是简单的.

God made the integers, all the rest is the work of man.

翻译:上帝创造整数, 其他的都是人类的工作.

This rule can be used for all integers, both positive and negative.

这一规则可用于一切整数, 包括正的和负的.

Write and read strings integers and floats ; printf-style log file output.

写入和读取字符串、整形和 浮点 变量;按照规定的日志风格输出文件.

He couldn't afford the fare; he thumbed his way all over Europe.

他付不起车费, 于是他搭便车走遍欧洲.

The books were badly thumbed.

那些书因被翻阅过多而弄得很脏.

He thumbed his way to Boston.

他搭乘别人顺路的车去波士顿.

The pages had been thumbed into a state of extremely dirty softness.

纸张被手指翻动得污垢不堪、又烂又软.

He thumbed through the directory to look for her number.

他翻阅电话号码簿找寻她的号码.

He thumbed through the book.

他匆匆地翻阅那本书.

I thumbed through the report quickly on the train.

我在火车上翻阅过这份报告了.

These books were badly thumbed.

这些书都给翻烂了.

He thumbed through a big, black book, full of names, hunting for Jordache.

他翻阅着一大本黑色名册, 找乔达虚这个姓.

It may interest you to know that a boy answering Rory's description thumbed a ride to Howth.

你或许会对这个消息感兴趣，有个和罗里描述的一模一样的小男孩搭便车到了霍斯。

He thumbed through the book again to look for the bookmark.

他又翻了一遍书,想找到那张书签.

He kept thumbing through the book until he found the right page.

他不停地翻书,直到找到那页.

Brenda sat in the doctor's office thumbing through a magazine while she waited.

布伦达坐在医生办公室等候时,随手翻开了一本杂志.

I went out onto the road to start thumbing.

我走到公路上,竖起拇指要求搭车.

I was thumbing through a magazine when a secretary came in.

我正在翻阅一本杂志,秘书走了进来.