glass stopper

例句：

1. 1. The glass stopper prevented the liquid from leaking out.
   这个玻璃塞子防止了液体泄漏。
2. 2. The glass stopper was carefully placed on the bottle to keep the contents fresh.
   这个玻璃塞子被小心地放在瓶子上，以保持内容物新鲜。
3. 3. The glass stopper was removed to allow for easy cleaning of the bottle.
   这个玻璃塞子被移除，以便容易清洗瓶子。