| 词汇 | vain |
| 词根词缀 | 词源： c.1300, "devoid of real value, idle, unprofitable," from O.Fr. vein "worthless," from L. vanus "idle, empty," from PIE *wa-no-, from base *eue- "to leave, abandon, give out" (cf. O.E. wanian "to lessen," wan "deficient;" O.N. vanta "to lack;" L. vacare "to be empty," vastus "empty, waste;" Avestan va- "lack," Pers. vang "empty, poor;" Skt. una- "deficient"). Meaning "conceited" first recorded 1692, from earlier sense of "silly, idle, foolish" (1390). Phrase in vain "to no effect" (c.1300, after L. in vanum) preserves the original sense. 词根记忆： a. 徒劳的,徒然的;自负的,爱虚荣的The gained grain drained away with the rain, all the pains were in vain again.收获的谷物随雨水流失了,所有辛劳又白费. |
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