Actiyator
[电] 调速控制器
🗣️ 情景例句
No pain, no gain.
只有付出，才有收获！（不劳则无获！）
On the first day of the new year.
新年的第一天。
It was one of the biggest buildings of all time and a lot of people from many countries came to see it.
它是有史以来最高大的建筑物之一，因此，人们从各个国家纷纷前来参观。