Focuser
聚焦放大镜, 聚焦装置
🗣️ 情景例句
Well, Grandpa, you're about five-nine or five-ten.
嗯， 爷爷。你大概是五英尺九或者五英尺十。
I got much volume on the TV set.
我的电视机有很大音量。
He asked if Mr.Gilbert's operation had been successful and the doctor told him that it had been.
他问吉尔伯特先生的手术中否成功，医生告诉他手术很成功。