您要查找的是不是：
- Pacific Valves' unique injector has a double ball check protection against leakage and a positive shut-off internal valve. 美国太平洋阀门独特的注入器具有双球止回保护，防止泄露，并保护阀门内部活动部件。
- The plumber made a careful check of the pipes. 管子工对管道做了仔细的检查。
- She subscribes to an animal protection society. 她捐款给一个动物保护协会。
- Sunday is the best day to check the want ads. 星期天是在报纸上查寻招聘广告的最好的日子。
- Have you got any rain check for the following game? 你拿到下一场球的免费票了吗？
- We subscribe to an animal protection society. 我们定期捐款给一个动物保护基金会。
- It always pays to give your paper one final check. 写了东西最后检查一遍总是有好处的。
- He was careful enough to check up every detail. 他非常仔细，把每一个细节都核对过了。
- Please check up these references. 请核对这些参考资料。
- Carefully check the car being scorched. 仔细检查过被烧焦了的汽车。
- The young in our society need careand protection. 我们社会的年轻人需要受到关怀和爱护。
- He predated the check by five days. 他把支票上的日期填早了五天。
- I'll have to check the entries in the ledger. 我得核对一下总帐的项目。
- He was paying out half his profits as protection. 他把所得利润的一半交给歹徒作为保护费。
- They lobbied on the environmental protection issue. 他们就环境保护问题在议员中进行了游说。
- Is there a place we can check in our coats? 有暂存大衣的地方吗?
- A thin jacket is a poor protection against cold. 一件单薄的夹克衫不足以御寒。
- The settlers banded together for protection. 移民联合起来保护自己。
- I accept a check in lieu of cash. 我接受支票代替现金。
- Don't forget to check on your work. 别忘记检查一下你们的工作。
