I have been so moved by the generosity of donors, the passion of volunteers, and the perseverance, bravery and optimism of the survivors.

捐款者的慷慨、义工的热诚，生还者的坚毅、勇敢和乐观，都使我深深感动，他们也感动了世界。

youdao

Worse still, I was never able to distinguish his optimism from plain egomania; I would not have been surprised to hear him announce that he had invented a better tree.

更糟的是，我没法辨别，这些究竟是他的乐观主义，或仅仅是狂妄自大而已。所以，即便是他宣布他发明了一种更牛逼的树木，我也不会惊讶。

youdao

There have been various studies carried out on optimism and while I have a few reservations on extreme optimism, one can't deny the role optimism plays in enhancing your personal growth.

目前已经有关于乐观的各种各样的研究，虽然我对极端的乐观主义持有保留意见，但一个人是无法否认乐观在强化个人成长中所起到的作用的。

youdao

But I have great optimism that we have begun to dig ourselves out of this hole.

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Down through the years I have seen despair and frustration evolve into optimism and progress and, even now, we must not abandon efforts to achieve permanent peace for Israelis and freedom and justice for Palestinians.

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And what makes me confident is seeing all of you and seeing what I see all across America -- people who have drive and who have optimism and who are decent and do right by their families and do right by their communities.

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