Astromagnetism
天体磁学
🗣️ 情景例句
After Richard was born.
等生下Richard之后。
Our packing charge includes $1 for the drum, which sum will be credited on return.
包装费中有1美元是包装桶的费用，此费用在桶还给我们时可退回。
Are these English books?
这些是英语书吗？