air-tight的例句（air-tight在句子中的用法）

• Changes in temperature occur slowly and are constrained within relatively tight bounds. 温度变化缓慢，而且局限在相对较小的范围内。
• His father kept a tight grip on his collar in case he should make a bolt for the door. 他的父亲紧紧抓住他的衣领，防止他夺门而逃。
• Throughout the exercise, focus on keeping your abs tight. 整个锻炼过程中，注意要紧绷腹肌。