Quadrupler
[计] 四倍器, 乘装置
🗣️ 情景例句
for opening their home to me.
为我敞开大门。
He spends a lot of time reading books on ecology.
他花了大量的时间阅读生态学方面的书籍。
Can you ring me back right away?
你能立刻回个电话吗？