He used a rope to mark off the circle.
他用一根绳子把这个圈围了起来。
Can you get that dirty mark off the wall?
你能把墙上的斑点擦掉吗？
Read the text through and mark off the sections you find particularly applicable .
通读全文，画出你认为最有用的段落。
Read the text through and mark off the sections you find particularly applicable .
通读全文，画出你认为最有用的段落。
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