Sinuidal
正弦波; 正弦形
🗣️ 情景例句
What kind of guarantee do you offer?
这种车有售后服务保证吗？
Then the damage must be caused at somewhere along the line where the goods weren't handled properly.
那么残损一定是在运输途中的什么地方对货物处理不妥造成的。
How are you getting there? By train?
你准备怎样走？坐火车去吗？