显微镜下观察皮片下血管网形态。

Morphological changes of vascular network were observed by microscope.

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显微镜下观察并对比皮片下血管网形态。

Shape of subcutaneous vascular network was observed and compared under microscope.

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用水将刀片重新干净，然后移到另一片区，防止刀片下可以刮伤玻璃的碎片。

Rinse the blade and repeat on the next section to avoid trapping debris under the blade that could scratch the glass.

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Before eating the last slice, you could check with your friends to make sure it's alright for you to delve in.

在伸手拿最后那片披萨前，你可以跟你的朋友确认下，你吃完最后一片有没有关系。

Is it okay 课堂 - SpeakingMax英语口语达人