摘要:①.沿着-向上 a. The bus climbed steadily up the road. b. The cat climbed up the tree. ②.在某一高处或较高地方 a. There was a workman up the ladder when it fell. b. His office is up the stairs. c. The cat is up the tree. ③.词组和固定搭配: up and down来回

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