Bellot
月球表面第四象限内坑名
🗣️ 情景例句
She majored in math and physics at university.
她在大学里主修数学和物理。
We can't rely on him.
我们不能依赖他。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。