a.  不利的，有害的，反面的

• adversity   n.  逆境，不幸，厄运

• adverse conditions/effect  不利条件/影响

• in the face of adversity  面对逆境

• adverse reactions  不良反应

• They fear it could have an adverse effect on global financial markets.

  他们担心这会对全球金融市场产生不利影响。

• The expedition was abandoned because of adverse weather conditions.

  由于天气恶劣，探险活动中止了。

• When these side effects occur, they are called adverse reactions. 副作用 → 不良反应

• Once upon a time, Americans thought that if they worked hard enough, enough in the phase of adversity, they would be rewarded with success. 逆境阶段

• Inharmonious relationships have an adverse effect on productivity.  对…产生不利影响

BrE /ˈædvɜːs/

NAmE /ədˈvɜːrs/