volatile sulfur compounds造句

例句与造句

1. At night our immunity of body falls down . virtually all cases of bad breath are caused by volatile sulfur compounds vscs
   因为人们在晚上睡觉时，免疫功能下降，口腔内细菌大量孳生所致。
2. It's difficult to find volatile sulfur compounds in a sentence. 用volatile sulfur compounds造句挺难的