| 单词 | 三角区 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔gable〕The generally triangular section of wall at the end of a pitched roof, occupying the space between the two slopes of the roof.三角墙建筑部分：斜屋顶末端的墙的大体三角区，占据屋顶两个斜面间的空间美国传统〔trigone〕Since most of these tumours involve the trigone, they are rarely operable.这些肿瘤大部分发生在膀胱内壁三角区，因此极少能做手术。剑桥高阶 |
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