The dog strains at the leash, eager to be off.狗拼命地扯拉皮带, 想挣脱开去.This leash chafes the dog's neck.这条皮带磨破了狗的脖子.Fish ponds edge of the tree leash their home Tibetan mastiff.鱼塘边的树上拴着家里的藏獒.I reached for the leash, but the ...
N , N - dimethyl - 2 - mercapto - nicotinic amide is an important synthetic intermediate for drug and pesticide.二甲基 -2- 巯基烟酰胺是重要的医药和农药中间体.Mercaptobenzothiazole or the mercapto - mix: Which should be in the standard serie...