1. Prosecutors and the public have zeroed in on Purdue Pharma, which introduced the blockbuster drug OxyContin in 1996.

zero in on 瞄準（目標）;向…移動;全神貫注于（問題或主題）

He raised the binoculars again and zeroed in on an eleventh-floor room.

他再一次舉起雙筒望遠鏡，瞄準了11層的一個房間.0ABCDj;twQl9o5A;[84。

2. He in effect invented the field of medical advertising, creating the first family fortune after aggressively marketing the sedatives Librium and Valium to doctors, without a serious study of the addiction risks.

in effect 其實;實際上

That deal would create, in effect, the world's biggest airline.

事實上，這一協議將促成世界最大航空公司的成立]a&NOT!ClXBvd_*Rc%。

3. By the time that happened, his branch of the family no longer held a stake

by the time 到…的時候

By the time you get there the meeting will be over.

等你到了那里的時候，會議就該結束了JBmR~q8Yhf。