key item的用法和樣例：
例句
- Another key item on the touch screen is your e-mail system.
另一個關鍵項目的觸摸屏是您的電子郵件系統。 - It is generally recognized that the seepage monitoring is one of key items of dam safety monitoring.
滲流監測是大壩安全監測的一個關鍵項目，對保障大壩安全具有重要意義。 - We must concentrate on key projects in agricultural science.
切實組織農業科學重點項目的攻關。 - Efforts should be made to do a good job in key construction projects.
搞好重點項目建設。
