1) This medicine is no use to me.
这药对我无效。
2) The drug was of no effect.
这药无效。
3) It is no benefit to me at all.
这对我毫无益处。
4) It matters little to me.
这对我无所谓。
5) placebo
[英][plə'si:bəʊ] [美][plə'sibo]
无效对照药
6) This medicine is no use for me.
此药对我无用。
补充资料:附着剂可提高蜡质蔬菜药效
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