单词seventeen year locust
na.: 〈美〉【动】十七年蝉
【动物;动物学】〔美国〕十七年蝉〔幼虫在地下13~17年才成虫〕
Who knows what sort of seventeen-year locust will next come out of the ground?
谁知道下一次还会发生什么样的十七年蝗灾？
If we have had the seven-years" itch, we have not seen the seventeen-year locust yet in Concord.
即便我们患了七年才治好的癣疥，我们也并没有看见康科德受过的十六年蝗灾。