Mental stress must be eased with tranquilizers.

例句：

1. 1.He was under immense mental stress due to the sudden death of his father.
   由于他父亲的突然去世，他承受着巨大的心理压力。
2. 2.The patient was under mental stress from the diagnosis of a serious illness.
   这位病人因被诊断出患有严重疾病而承受着心理压力。
3. 3. The team was under mental stress because they had to perform well in the upcoming competition.
   团队因为即将到来的比赛需要表现出色而承受着心理压力。