Cut them off cleanly through the stem just below the node.就从茎节下面，沿茎干把它们全砍掉。The stinging nettle has a square stem and little hairs.荨麻长有四方茎和细小茸毛。He chewed the stem of his pipe and eyed her sceptically.他嘴里衔着烟斗柄，满腹狐疑地打量着她。...
这是及格和不及格的差别.It'sthe difference between a pass and a fail.我倒要谢谢那两位给她不及格的先生.I'd like to thank the two professors who flunked her.有你的帮助我想他能及格的.I think he's able to pass with your help....