从1970年起，它们的数量下降了一半，可是他们已从这个数量反弹—最近我们看到数量再一次下降的信号，而我们不知道为什么会发生这种情况。
From 1970, their numbers declined by about half, and they've been bumping along at that level - recently we've seen signs of them dipping down again, and we don't know why that's happening.
不知道为什么，别人一分付出一分收获，而我十分付出却得不到一份的收获。
Why doesn't know, as soon as others instruct one point harvest, but I ten instruct actually not to be able to obtain a harvest.
而我第一眼看到他我就爱上他了，不知道为什么会有这样的感觉——在看到他的那一刹那，我就觉得我的心已经不属于我自己了。
But for me, I love him at the first sight. I never get it why I should have had that kind of feeling — the moment when I saw him, I felt like my heart had not belonged to myself any more.
坐在讲座厅里听天文学家的讲座，讲座引起阵阵掌声。而我却不知道为什么，很快就觉得疲惫恶心；
When I, sitting, heard the astronomer, where he lectured with such applause in the lecture room, how soon, unaccountable, I became tired and sick;
坐在讲座厅里听天文学家的讲座，讲座引起阵阵掌声。而我却不知道为什么，很快就觉得疲惫恶心；
When I, sitting, heard the astronomer, where he lectured with such applause in the lecture room, how soon, unaccountable, I became tired and sick;
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