harmful effect的用法和樣例：
例句
- Yet the bad effect it had on some of us persists.
但它對我們中間某些人產生的不良影響還沒有消除。 - Playing too many games will have a bad effect on your studies.
玩太多的遊戲對學習有不良影響。 - The challenge for scientists and chemical engineers is to find substitutes that will be as effective as CFC's and that will not have some other group of harmful effects.
對科學家和化學工程師的挑戰，是找到與氯氟化碳一樣有效井沒有其他有害效應的替代物。
