B2 noun /dʒem/
Gem
宝石
Meaning
a precious or semi-precious stone, especially when cut and polished or engraved; something prized for its beauty or worth
Example
The antique necklace featured a rare sapphire gem surrounded by diamonds.
这条古董项链上镶嵌着一颗稀有的蓝宝石宝石,四周环绕着钻石。