protect...from...保护……免受……
In the 7th and 6th centuries BC, individual sections were built by different states in order to protect themselves from warrior tribes from the north.
在公元前第七和第六世纪，个别部分是由不同的国家为了保护自己免受北方的武士部落侵害而建的。
He raised his arm to protect his face from the blow.
他抬起手臂保护脸免受打击。
