Micrometeorite
n. 微小陨石
🗣️ 情景例句
I've been thinking.
我一直在考虑。
I cannot afford two days off a week.
我忙得无法一星期抽出两天休假。
Though a number of descents have been made, much of it still remains to be explored.
人们多次进入洞内探险，但至今尚有不少东西有待勘探。