Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute.

乐观分子和悲观分子都对社会作出了贡献，前者发明了飞机，后者发明了降落伞。

youdao

Other people are both pessimists and optimists.

其他人则是集乐观和悲观于一身。

youdao

Optimists are said to experience a higher level of both physical and mental functioning than their pessimist counterparts.

研究者认为乐观的人与悲观的人比较，启身体和精神机能两者达到较高水平。

youdao

Other people are both pessimists and optimists.

VOA: special.2011.04.00

The optimists argue that they have both history and public opinion on their side.

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And so, referendum optimists have been telling me since springtime, the bidding wars for both the oil and the export pathways would provide the new state with all the economic autonomy and prosperity it needed.

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Trade will continue on Wall Street, as optimists and pessimists place their bets on both sides of the market.

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