Pseudocotunnite
钾氯铅矿
🗣️ 情景例句
I've been moonlighting for years.
我几年来一直兼职。
We pitied the family in their sudden unhappiness.
那家人遭受突然的不幸，我们深感同情。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。