Planetesimal hypothesis
星子假说
🧩 词语组成解析
n. 星子, 小行星体
🗣️ 情景例句
And am I glad to see you!
我看见你才高兴呢！
One of the real pluses of this product is that it is of very high quality and of compact size.
这种产品的真正优点之一就是高质量和小体积。
I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。