Bituminite
烟煤
🗣️ 情景例句
Can you weigh this for me?
你能帮我称称这（包裹）吗？
Jack will feel sorry when she leaves.
她一走，杰克会觉得悲伤的。
I like reading English books, but they're sometimes rather hard.
我喜欢看英语书，但有时候英语书相当难读。