一种新的抗生素只需要三天疗程。

A new antibiotic requires only a three-day course of treatment.

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在一天结束后，把所有营养素的百分比加起来。

At the end of the day, add up the percent DVs.

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目前，科学家报告称他们已经创造出了一种隐形镜片，它能以固定速度持续释放高浓度抗生素超过30天。

Now, scientists report that they've created a contact lens that can deliver a high concentration of antibiotic at a constant rate for more than 30 days.

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