there is no such thing as a free lunch 中的as是介词还是连词

There's no such thing as a free lunch的意思 there's no such thing as a free there ain't no such thing as a free there is no such thing as.. There is no such thing as a small crime there is no such thing as A but B 是什么意思? There is no such thing as standard English. 英语翻译there is no such thing as standard Englishi there is no such thing as an average workday There is no such thing as an unbiased observation such as 中as是连词还是介词? 为什么there is no such thing as 后面有的有一个a而有的没有a