You could get them under the Trade Descriptions Act for that!你可以根据《商品说明法》将他们绳之以法。I'm designating you to act for me while I am away.当我不在时,我指派你来代替我.He authorized me to act for him while he is abroad.他授权我在他出国期间代行他的职务....

act for的音标：act for的英式发音音标为：[ækt fɔ:]act for的美式发音音标为：[ækt fɔr]...

代表（某人），代替（某人）执行某公务...