昨天俞鸣洪说今天要到我们班上来听课。
洪说，部分原因是压力有助于养分注入没有血管的软骨。
Hung says this is partly because the pressure helps to pump nutrients into cartilage, which has no blood vessels.
周洪说，每次这群人会面，他都要平均发出500只咖啡杯。
Zhou said he hands out an average of 500 coffee cups every time the group meets.
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