Strongbox
n. 保险箱
✅ 同义词
🗣️ 情景例句
using as many letters as possible.
尽可能多用字母，
It's not too heavy,but I don't know the exact weight.
它不是太重的，但是我不知道准确的重量。
like the cooling of a hot kettle or the wearing-out of a pair of shoes.
就像一壶热水迟早会凉下来，一双鞋渐渐会磨破一样。