Stakes mark the boundary of his ranch.
木桩用来标出他农场的范围。
Stakes mark the boundary of his ranch.
大牧场以树桩为分界。
Once, with his underwater telescope and flashlight, Mark dived along the boundary between the steep reef and the area of seaweed conservation.
有一次,马克带着他的水下望远镜和手电筒,潜到陡峭的暗礁和海草保护区间的分界线。
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