Ungstenic
钨的
🗣️ 情景例句
Let's tie the knot.
我们结婚吧。
I'm pressed for time.
我时间紧迫。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，