她们只有很少的皮下注射针头，而时间又不够用，所以一天当中针头只经过一次消毒。
But they had a few hypodermic needles, and time was short so the needles were sterilized only once a day.
这种微针头像普通的皮下注射针头一样是中空的，或者覆盖了一层在眼睛里分解的药物。
The microneedles are either hollow or empty, like a normal hypodermic needle, or covered with a drug which breaks down in the eye.
它不是一个你看到的困境及到处都是皮下注射针头和无家可归的由10个街区构成的贫民窟。
It isn't this 10-block area of Skid Row where all you see is plight and hypodermic needles and homelessness.
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