必须在它的位置上放一根新绳子。

A new rope had to be put in its place.

youdao

土壤中对植物有用的矿物质元素必须先溶解在土壤溶液中，然后才能被根吸收。

The mineral elements from the soil that are usable by the plant must be dissolved in the soil solution before they can be taken into the root.

youdao

“我只有4根手指，必须自己想出方法。”他说。

"I have to come up with my own way with only 4 fingers," he said.

youdao

Does that forces us to say, "Ah, so it's not ?" the same rope at the end as the beginning."

那我们是不是就必须说,“啊，这不是一开始那根绳子了“

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