[给力词汇]高中版:2011高考英语高频词汇精选-第37期 ... be watchful for 注意 keep (a close) guard on 注意 4. protect … from / against 保护…（使不受伤害） ...
双语例句
1
A regiment stayed behind to keepguardon the frontier.
有一个团留下来防守边境。
2
If too many workers were idle, that would bear down on prices and allow central Banks to keep interest rates low to boost spending and jobs and to guard against deflation.
如果有太多的劳动者无所事事，这将使价格降低，中央银行将保持低利率来促进就业和消费，以防止紧缩。
3
There are also certain ways to tell if someone is lying to help keep yourself onguard.