| 单词 | efficacious |
| 释义 | Word Frequency efficacious(ˌɛfɪˈkeɪʃəs) adjective capable of or successful in producing an intended result; effective as a means, remedy, etc Derived forms efficaciously (ˌeffiˈcaciously) adverb Word origin C16: from Latin efficāx powerful, efficient, from efficere to achieve; see effect |
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