NOEC无可见影响浓度noadv.不adj.没有；不是；禁止n.否定的回答；投反对票者Noyes' corneal scissorsno - steady - state非稳态No joy without annoy.[谚]天下没有纯粹的快乐；乐极生悲。No hands went up now.现在没有人举手了。No condition on Axis II轴Ⅱ无情况No need to use FISHMEAL不需要使用鱼粉No point in delaying.没有理由拖下去No One Else Comes Close没有更接近的了no-killing operations不压井作业no matter who ...不管谁 ...