You must on no condition tell them what happened.
你決不能告訴他們所發生的事。
Special conditions apply if you are under 18.
18歲以下者按特殊情況處理。
These are the terms and conditions of your employment.
這些是聘用你的條件。
Day by day his condition improved.
他的健康狀況一天天好轉。
Patients can become conditioned to particular forms of treatment.
病人會習慣某些治療方式。