; j% A. r4 m% @0 N ~7 v- h" `intestine 是可数名词 8 p6 G2 }4 G& A但每个人只有2个intestine, " N5 g( f0 ]& f4 K& W
the large intestine U# ^& R* E7 ]$ @& L. B0 k1 c+ Ethe small intestine - q: p' J$ E; L + D4 Z" P" } `所以 - V+ X+ A1 T0 p/ N7 t6 nYour intestineS are the tubes in your body through which food passes when it has left your stomach. L% `, V1 ]# WYour mouth, stomach, and intestineS are called your digestive system." D+ D& U" g. I$ i2 O# P6 x0 x/ M
这里之所以用复数，就是因为大小肠共称intestineS & L* i o9 }. m( [ 9 ^2 ^$ _ d0 t5 j) e$ obacteria that live in the intestineS 意思当然就是大小肠上的细菌。
发表于 2018-5-26 17:47:30
