Davidite
铀钛磁铁矿, 铈铀钛铁矿
🗣️ 情景例句
Mom, give me a break.
妈， 让我喘口气。
What have you decided?
你决定了什么？
The self-discipline required to drag myself out of bed eleven minutes earlier than usual was considerable.
这就要求我比平时早11分钟把自己从床上拽起来，这种自我约束是很艰苦的。