semi·de·tached /-dɪˈtæʧt/
(a.)半離的,只有一邊相銜接的
Sem·i·de·tached a. Half detached; partly distinct or separate.
Semidetached house, one of two tenements under a single roof, but separated by a party wall. [Eng.]
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semidetached
adj : attached on one side only; "a semidetached house"