保险箱，又称保险柜、保管箱，是一种用来存放贵重物品或重要文件的金属容器，通常具有防火、防水、防盗等功能。它是一种安全可靠的储物设备，广泛应用于家庭、办公室、银行等场所。

How to pronounce: [bǎo xiǎn xiāng]

Usage: 保险箱可以用来存放珠宝、现金、重要文件等贵重物品。

Example sentences:

1. 我把和重要文件都放在保险箱里。

I put my passport and important documents in the safe.

2. 银行的保险箱里存放着大量的现金和贵重物品。

The bank's safe holds a large amount of cash and valuable items.

3. 他们把珠宝都锁在了保险箱里，以防止被盗。

They locked their jewelry in the safe to prevent theft.

4. 这家酒店每间客房都配备了一台保险箱，方便客人存放贵重物品。

Each room in this hotel is equipped with a safe for guests to store their valuables.

5. 她打开了保险箱，取出了一封信。

She opened the safe and took out a letter.

Synonyms and usage:

1. 金库 (jīn kù) - vault, used for storing large amounts of money or valuables.

2. 保管箱 (bǎo guǎn xiāng) - storage box, used for keeping important items safe.

3. 保险柜 (bǎo xiǎn guì) - safe, a secure container for storing valuable items.

4. 保险库 (bǎo xiǎn kù) - safety deposit box, a small safe used for storing personal belongings in banks.

5. 储物柜 (chǔ wù guì) - locker, a small secure storage unit used for personal belongings.

Editor's summary:

保险箱是一种用来存放贵重物品或重要文件的金属容器，具有防火、防水、防盗等功能。它广泛应用于家庭、办公室、银行等场所，是一种安全可靠的储物设备。同义词包括金库、保管箱、保险柜、保险库和储物柜。