confusing   adj. 令人困惑的；混乱的

E.g. The instructions on the box are very confusing. 

      盒子上的使用说明令人费解。

cooperative  adj. 合作的

E.g. Cooperative activity is essential to effective community work. 

      要把社区工作做好，协作活动是必不可少的。

explain  v. 解释；说明

E.g. First, I’ll explain the rules of the game.

       首先，我要说明一下游戏规则。

hard-working  adj. 勤奋努力的

E.g. He was hardworking and energetic.

       他工作努力，精力充沛。

better safe than sorry  宁愿稳妥免致后悔

E.g. Don’t be afraid to have this checked by a doctor— better safe than sorry! 

不要害怕找医生检查一下——宁求稳妥以免后悔！

from now on 从现在开始

E.g. From now on I'll be more careful.

       从今以后，我会更加细心。

in time 及时

E.g. The ambulance got there just in time.

       救护车正好及时赶到那里 。

on time 按时；准时

E.g. Their planes usually arrive on time.

       他们的飞机通常都会准时抵达。