对于悲观主义者来说，玻璃杯是半空的；

To the pessimist, the glass is half empty.

youdao

对于乐观主义者，玻璃杯总是半满的。对于悲观主义者，它总是半空的。

For optimists the glass is always half full. For pessimists it is always half empty.

youdao

好了，罗伯，，悲观主义者还是有转变的希望的，科学家正在研究人们对于生活的态度是否可以从消极变得积极。

Finn: Well Rob, there is some hope for pessimists because research is taking place to see if people's attitude to life can be switched from negative to positive.

youdao