You should be optimistic that 你要乐观一点
you should be optimistic
你应该乐观一点
以上为机器翻译结果，长、整句建议使用 人工翻译 。
To be successful, you should keep positive optimistic attitude.
要获得成功，就要保持积极向上的乐观态度。
youdao
Well, I think that you should definitely be very optimistic because
嗯，我想你当然应该很乐观，因为
事业就是挑战 - SpeakingMax英语口语达人
But you should not be highly optimistic.
BBC: Dornier 17: Salvaging a rare WWII plane from the seabed
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