我们必须用一根木柱子撑住屋顶。

We had to prop up the roof with a wooden post.

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我们必须用胶把席子的边粘住，免得卷边。

We must glue the mat down at the edges to stop it curling.

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冬天我们必须用纸糊起来挡御寒风。

We must paper out the cold wind in winter.

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We, too, understand the relevance of what we call "the society function."] Rather it must be elucidated in its full extent through the problem of the evolution of literature.

你们不要以为我们很幼稚,我们也明白社会功能的意义是什么],但是我们必须用,文学进化的角度来解释它的功能。

耶鲁公开课 - 文学理论导论课程节选

and I have to create a few crowns with playing cards,

我们必须用扑克牌做一些皇冠，

正在准备庆典 - SpeakingMax英语口语达人

So we need some account to distinguish between suspended animation and out and out being alive.

我们必须用一种说法,将假死状态和非存活状态区别开来。

耶鲁公开课 - 死亡课程节选