pioneers

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pioneer有先驱;开拓者;等意思，那么你知道pioneer的过去式是什么吗?今天一起来学习一下pioneer的过去式以及pioneer的用法和例句，希望对大家的学习有所帮助!pioneer的过去式及其它时态pioneer的过去式:pioneeredpioneer的复数:pioneerspi

红领巾的英文：red scarf参考例句：Both of them were dressed in the blue shorts,grey shirts, and red neckerchiefs which were the uniform of the Spies他俩灰衬衫，蓝短裤，系着红领巾，这是侦察队的制服。The young pioneers all