Mother was all for demanding to know the real plan but again, Graff cut off all discussion with a cheerful bellow of, "Let's wait to discuss this until we can do it without Shouting!"

母亲决心问清楚真正计划，不过格拉夫再次愉快地大声打断她，“等我们不用大喊大叫的时候再讨论好吗？”

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Its main characteristic is that it adds a bellow structure, and it is named by the lapping sidewall — bellows one-off syringe, and it can flex freely.

其主要特征是增加了风箱结构，因其侧壁为折叠状而得名——风箱式一次性注射器，可自由伸缩。

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