■under pressure 在压力下；被迫
He always works best under pressure. 他总是在有压力时工作做得最好。
He only agreed to leave the country under pressure. 他是在压力下才同意出国的。
■under repair 在修理中
The road is under repair. 道路正在整修。
He will go to town on foot, for his bike is under repair. 他将步行进城，因为他的自行车在修理。
■under review 在审查中；在复查中
The policy is now under review. 这项政策正在审议之中。
Our contracts are currently under review. 我们的合同正在复查。
■under suspicion 受怀疑，受猜疑，涉嫌
He was arrested under suspicion. 他受嫌疑而被捕。
He is under suspicion as one of the murderers. 他被怀疑是杀人凶手之一。
Any man having witnessed the attack is under suspicion. 任何目击此次袭击的人都有嫌疑。
■under treatment 在治疗中
He is under treatment for malaria. 他正在治疗疟疾。
He is still under treatment in hospital. 他仍在医院治疗。
■under water 在水下；被水淹
Man cannot breathe under water. 人不能在水下呼吸。
After all the rain, most of the town was under water. 大雨之后，这个城镇的大部分地区都被水淹了。
■under way 在进行中；（船）在航行中
The great ship got under way. 大船启航了。
Preparations are under way for a wedding. 婚礼的准备工作正在进行当中。
He gave his consent for the project to get under way. 他同意将这个计划付诸实施。
■under weight 过轻(重)
She is under weight. 她体重太重。
【注】该短语的反义短语是over weight（过轻）。如：
She is over weight. 她体重太轻。
■under wraps 保密，隐藏
The project has been kept under wraps for years. 这个项目保密了许多年。
The documents will stay under wraps for ten more years. 这些文件要再保密10年。