It isn't appropriate for an officer to be overly familiar with an enlisted man.

军官对入伍士兵过分随便是不合适的。

A thank-you note or telephone call after the visit is also considered polite and is an appropriate way to express your appreciation for the invitation.

拜访后的一封感谢信或一个电话也被视作一种礼貌，是一种表达你对收到邀请的感谢的适当方式。

After taking appropriate measures to contain the RF interference to our test lab, we tested the attack out for ourselves, and were able to verify that it's possible with the right equipment.

我们采取了适当措施，来拦截发射到测试实验室的无线电干扰信号。在此以后，我们自己测试了这次攻击，证实了使用正确设备是有可能阻断信号的。