提供大家交流免杀技术知识和求助！
Available to share their technical knowledge and help to avoid killing!
教官在给准海豹队员们演示水下的作战技巧。然而队员们分别开始捉对撕杀，在池中演练实战技术。
5an instructor demonstrates water combat techniques to prospective SEALs. The sailors then pair off, and practice the technique in a pool.
利用这项技术可望解决三系、两系或化学杀雄杂交稻制种过程中出现的纯度问题，且有利于新杂交稻组合的选育。
Using this technology, the purity problem during seed production in three-line, two-line or chemical-emasculated hybrid rice breeding system could be solved and some new combinations could be bred.
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