在 UNIX系统中， etc/services 接口主要提供什么服务
A、etc/services文件记录一些常用的接口及其所提供的服务的对应关系A
暂无解析
英语翻译：comeintoforce
Perseveranceisakindofqualityandthatis_______ittakestodoanythingwell.
Thereisagrowingbodyofevidencetosupportthefactthatmostpeoplesufferfromalackofdaydreaming_______anexcessofit.
Thesyntacticrulesofanylanguageare______innumber.
Thereisadeadlock(僵局)inthediscussionwhenneithersidegives________totheother.
