Because the eyes and nose are portals of entry for infections, there are lots of mast cells around those areas for extra protection.
由于眼睛和鼻子是外来性感染侵入机体的主要通道,肥大细胞在这些区域大量聚集来加强防护。
单词 | portal of entry |
例句 |
原声例句
Osmosis-呼吸 Because the eyes and nose are portals of entry for infections, there are lots of mast cells around those areas for extra protection. 由于眼睛和鼻子是外来性感染侵入机体的主要通道,肥大细胞在这些区域大量聚集来加强防护。 |
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