• 小洞,小坑

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1. The dog skins through the small hole in the wall.
   那条狗勉强钻过小小的墙洞。
2. The oil leaked away because there was a small hole on the tank.
   没渗出来了，因为没箱上有一个小洞。
3. A small hole or crevice through which one may peep.
   窥孔一个人们可以用来偷窥的小孔或裂缝