So we can really start to test whether or not a delivery system is effective.

由此我们就能够开始对输送系统的有效性进行检测。

Cai, who has been taking initiative on her own, isn't a delivery worker by definition but plans to help nevertheless.

蔡一直在自己采取主动，从定义上来说，她不是送货员，但她计划帮忙。

I'm not a delivery man, I I'm a doctor. Although I do often deliver alarming biopsy results to my patients.

我不是送货员，我是名医生。虽然我也常常亲自给病人送结果很不妙的活检报告。