🄰 vi.
1.opening, gap +堵住；盖上
Don't use cold water as it shocks the blood vessels into closing up.不要使用冷水, 因为血管会受刺激而闭合。
2.(draw together)靠近；靠拢
The ranks closed up.队列靠拢在一起。
3.wound +愈合
🄱 vt. sep.
1.to close up sthorto close sth up
+ house, shop关闭；关好
2.to close up sthorto close sth up
+ pipe, tube, opening堵住；盖上
3.to close up sthorto close sth up
+ wound使合拢；使愈合