tial结尾的单词

　　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。

　　It is essential that we present a united front.

　　至关重要的是我们要表现得团结一致。

　　Good posture is essential when working at the computer.

　　用电脑工作时良好的`姿势极其重要。

　　The agreement is essential to spurring economic growth around the world.

　　这项协议对于促进世界经济的增长是至关重要的。

　　A degree is an essential prerequisite for employment at this level.

　　学位是做这级工作必备的先决条件。