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今天我們要學的詞是 pinpoint.
pinpoint 的意思是準確地查明、確定。 An Australian-led study has claimed to have pinpointed the birthplace of modern humans to a region south of the Zambesi River in southern Africa. 一項由澳大利亞主導的研究聲稱，已經確定現代人類的發源地在非洲南部贊比西河以南的地區。
Two years after Stephen Paddock allegedly opened fire on concert goers from his hotel room in Las Vegas, investigators are still unable to pinpoint a motive for the massacre that killed 57 people. 兩年前，斯蒂芬·帕多克據稱從他在拉斯維加斯的酒店房間向一場音樂會的觀眾開槍，調查人員至今仍無法查明那場造成57人死于非命的大屠殺的動機。
