| 单词 | periodical cicada | 
| 释义 | periodical cicada in British English (ˌpɪərɪˈɒdɪkəl sɪˈkɑːdə) noun   another name for seventeen-year locust seventeen-year locust in British Englishnoun an E North American cicada, Magicicada septemdecim, appearing in great numbers at infrequent intervals because its nymphs take 13 or 17 years to matureAlso called: periodical cicada | 
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