血块在伤口表面凝结之后在伤口上形成保护痂，新的皮肤在保护痂下生长。
As a blood clot on a surface injury dries out it forms a protective scab over the wound allowing new skin to grow underneath.
在Penrice公司车间的控制室，工人们可以看到晶形在真空鼓过滤器表面凝结。
In the plant’s control room, Penrice’s workers watch crystals form on the outside of a vacuum-drum filter.
水蒸气触及冷的表面即凝结成水。
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