產(chǎn)生作用 start to have effect
operate on〔upon〕 sb/sth
This famous doctor has operated on many important people.
這位名醫(yī)為許多重要人物做過(guò)手術(shù)。
The surgeons operated upon him for a tumour.
外科醫(yī)生為他施行了腫瘤切除手術(shù)。
I\\\'m afraid that your leg will have to be operated on, there\\\'s no other way to stop the pain.
恐怕你的腿得做手術(shù),沒(méi)有其他辦法止痛。
operate sb on sth
My father is a doctor, he operated a patient on the head last night.
我父親是醫(yī)生。他昨晚上給一個(gè)病人做了頭部手術(shù)。
operate on sb/sth
The tractor operates on diesel oil.
拖拉機(jī)用柴油開動(dòng)。
These reasons operated on the mind of the hearer.
這些道理在聽(tīng)者思想上產(chǎn)生了作用。
The medicine will quickly operate on such patients.
這種藥很快就會(huì)在這種病人身上起作用。