| 词汇 | cost |
| 词根词缀 | 词源： c.1200, from O.Fr. coster, from V.L. *costare, from L. constare "to stand at" (or with), from com- "with" + stare "to stand," from PIE base *sta- "to stand" (see stet). The idiom is the same one we use in Mod.E. when we say something "stands at X dollars" to mean it sells for X dollars. Cost effective (also cost effective) attested from 1967. 词根记忆： n. 成本,费用,代价v.价值为,花费The costly post was postponed because of the frost.那件昂贵的邮件由于霜的缘故而延搁. |
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