1. For the simple reason that I was left with several curiously shaped bits of metal which did not seem to fit anywhere.
    原因很简单，因为还剩下几个形状奇特的零件似乎哪里也装不上去。

2. The airport was built during the war, but for some reason it could not be used then.
    这机场虽然建于战争时期，但由于某种原因当时没有交付使用。

3. This rule is quite consonant to reason.
    这个规则很合情理。

4. The reason for such strange behavior is beyond my ken.
    我无法解释这些古怪的行为。

5. There is no reason to believe that this pace will slacken.
    没有理由使人们相信这个速度会变慢。

6. There is no reason to believe that this pace will slacken.
    没有理由使人们相信这个速度会变慢。

7. The Butterfly Effect is the reason.
    原因是蝴蝶效应。

8. The reason lies in its gravity.
    其原因在于月球的重力。

9. The airport was built years ago, but for some reason it could not be used then.
    机场是许多年前建的，但由于某种原因当时未能启用。

10. Then, even if you haven't uncovered the reason, you should begin to make firm decisions and practice responding to your children's requests in a prompt, definite manner.
    然后，即使没能找出原因，你也该开始作出果断的决定，并试着用迅速、果断的方式对孩子的要求作出反应。

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