常見(jiàn)例句In this example, the surface is not simply connected and any smoothed-out object looks like a torus with at least one hole.在這個(gè)例子里，圈餅表面就是非單連通的，并且這類(lèi)物體的簡(jiǎn)化就會(huì)像是至少有一個(gè)洞的曲面。 返回 simply-connected