Oxyacetylene
a. 氧乙炔的
🗣️ 情景例句
How nice to meet you.
认识你真高兴。
When I get sleepy,I'll probably get ready for bed.
当我磕睡时，我将上床。
They have been told that rescue operations are progressing smoothly.
他们一直被告知营救工作进行得非常顺利。