为自己加油

Correct or improve the translation of the following English sentences.原文：Chou arranged for them to join the Berlin Communist group as candidates until their application had been sent to China and an answer received.译文：周恩来把他们作为候补党员加入党在柏林的支部，直到他们的入党申请书被寄到中国并受到回复。改译：

周恩来替他们办理加入党在柏林的支部，在入党申请书寄往中国而尚未批准之前，暂作候补党员。