| 单词 | 三级 |
| 释义 | 〔onslaught〕an onslaught of third-class mail.大批的三级邮件〔specialist〕Abbr. SPAny of several noncommissioned ranks in the U.S. Army that correspond to that of corporal through sergeant first class.缩写 SP特种官兵：任一个美军未受过军衔的军人，相当于从下士到三级军士的军衔 |
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