vacuum-tight container

例句：

1. 1. This vacuum-tight container keeps the food fresh for several days.
   这个真空密封容器可以保持食物新鲜几天。
2. 2.The vacuum-tight container prevents air from getting in, which keeps the contents fresh.
   真空密封容器防止空气进入，从而保持内容物新鲜。
3. 3. Vacuum-tight containers are often used in industrial processes to store and transport materials safely.
   真空密封容器常用于工业过程中，以安全地存储和运输材料。