Schalstein
辉绿凝灰岩
🗣️ 情景例句
The cut healed slowly.
伤口慢慢地痊愈了。
She's meeting me at the Libe at seven.
她约好七点跟我在图书馆见面。
This is not easy, and may require two porpoises working together.
这并非易事，可能需要两只海豚合伙干才行。