e.g. i.e. etc. et al. w.r.t. i.i.d. 用法:, e.g., || , i.e., || , etc. || et al., || w.r.t. || i.i.d. e.g. 拉丁文exempli gratia的缩写,意思是“举个例子,比如,例如…..”.Popular pets, e.g. , cats and dogs. i.e. 源于拉丁语id est的缩写,意思是“那就是说,换句话说”,等同于“that is, in other words, namely…