增强: strengthen; enhance; boost; heighten 短语和例子增强斗志 raise [heighten; boost] one's morale; 增强防御力量 strengthen defence; 增强免疫力 develop immunity from disease; 增强人民体质 build up the people's health; 增强
只: 只副词(限于某个范围; 只有; 仅有); only; just; simply; merely 短语和例子只能试试看 can only try; 只需一会的功夫 just for a moment; 我只想问一个问题。 i have just one question. 屋子里只剩下三个人。 there were only three people left in the
