常见例句用作形容词 (adj.)Their wedding cake had three tiers.他们的结婚蛋糕是三层的。This is a rope of three strands.这是一条三股的绳子。用作名词 (n.)Biodegradation has at least three definitions.生物降解至少有三重含义。This is a rope of three strands.这是一条三股的绳子。 返回 three-ply