- 负: burden; load
- 优势: superiority; preponderance; ...
- 负优生学: negative eugenics
- 税负优惠: tax incentive
- 优势: superiority; preponderance; dominant position; goodness 军事优势 military superiority; 空中优势 air supremacy; 优势兵力 superior forces; 在某方面占优势 have an advantage in sth
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