用谷歌手气不错翻译：It is an ill bird that fouls its own nest.结果是（）

It is abnormal that when the engine is being turned by the turning gear or by hand, （）.

书目数据库主要反映了图书馆具体收藏的各种文献的题目、作者、出版机构、版本情况、文献编号等等书目信息。通过它，读者可以在任何地点阅读其中所有文献的全文内容。

The important thing is that this is a major breakthrough. “breakthrough” here means an important development or achievement.

It should be apparent that little or nothing is gained by opening a drain at the same time as or after admitting steamThe above sentence probably means （）.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

Duty is an act or a course of action that people ______you to take by social customs, law or religion.

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

利用百度搜索引擎搜索有关“信息检索”方面pdf格式的文献，正确的检索式为（）。