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[摘要]：【全面一点的,用英语的】作业帮stain [stein] n.1.污染处,污点2.(名誉上的)污点3.(动物等的)斑点4.(染上的)色斑5.颜料;染料6.染色剂vt.1.玷污,染污:...

[摘要]：英语中关于”grammar"的权威定义有哪些啊?我要英文版本的,我...gram·mar n..1.a.The study of how words and their component parts combine to form...