effort可数吗文库

　　The project has demanded considerable investment of time and effort.

　　该项目已让我们投入了相当多的时间和精力。

　　We need to make a concerted effort to finish on time.

　　我们需要通力合作才能按时完成。

　　The local clubs are making every effort to interest more young people.

　　地方俱乐部正在尽一切努力来吸引更多的年轻人。

　　She made a visible effort to control her anger.

　　看得出她竭力控制自己不发火。

　　They have not made any effort to integrate with the local community.

　　他们完全没有尝试融入本地社区。