| 词汇 | thoughtful |
| 词根词缀 | 词源： c.1200, "contemplative," from thought + -ful. Also in M.E., "prudent; moody, anxious." Meaning "showing consideration for others" is from 1851. (Cf. thoughtless.) 词根记忆： a. 认真思考的,沉思的;体贴的,关心的He remained thoughtful for a while.他深思了一会儿. |
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