| 词汇 | echo |
| 词根词缀 | 词源： mid-14c., from L. echo, from Gk. echo, personified as a mountain nymph, from ekhe "sound." The verb is from 1550s. Related: Echoed; echoes; echoing. 词根记忆： v. /n.回声,反响,共鸣The mechanical mechanic knows the technique and technology of the echo mechanism.呆板的机修工知道共鸣装置的技术和工艺. |
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