不适当的

To be rude to the old is not proper.

对老人粗鲁是。

It's not proper to patch the roof with nailsick boards.

用多次钉过钉而结实木板修补屋顶是。

"The general mistimed the attack, which should have been made an hour earlier."

"将军在时间发起了进攻,一小时前他就该这样做了。"

He tried to exercise an undue influence upon his colleagues.

他想对他同事施影响。

If the emitter ledge is too thick, current will flow through the undepleted ledge, which increases the emitter-size effect.

射极突出部厚度，将会在射极突出部侧壁造成严重表面复合。