Molozonide
分子臭氧化物
🗣️ 情景例句
How ofter have met with our competitors?
你多久遭遇我们的竞争对手一次？
How many years have you been playing pingpong?
你打乒乓球多少年了？
What are they making? asked Li Lei. Uncle Wang laughed. Guess! he said.
“他们在造什么？”李磊问。王大叔笑了。“猜猜看！”他说。