not to be too pessimistic
不要太悲观
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Which is a reason, after all, not to be too pessimistic about America's cultural divisions.
ECONOMIST: The Versace controversy | The
These fortuitous conditions may not last, but for now they are good reasons not to be too pessimistic.
ECONOMIST: Running out of puff? | The
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