Lesson 21 Mad or not?是不是疯了?

mad [mæd] adj. 发疯

reason [ˈriːzən] n. 原因

【派】reasonable 合理的

【扩】cause 原因

【搭】give sb. a reason 给某人一个理由

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A: We'll need your guarantee of a timely delivery.

B: You already have it. You know we want to get paid as soon as possible. So there's no reason for us to delay the delivery.

A：您应该保证按规定时间发货。

B：这是肯定的。我们想让你们尽早付钱，因此我们没有理由推迟发货呀。

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sum [sʌm] n. 量

determined [diˈtəːmind] adj. 坚定的，下决心的

【扩】sturdy 坚定的（坚强的）

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A: He is determined to delay no more.

B: I hope he can do it this time.

A：他下决心不再拖延。

B：希望这次他能做到。

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