And a skeptic might come up with significant threats to the five giants.(持懷疑態度的人可能會認為五巨頭面臨著重大威脅。)

Why is it, Bering wondered, that even a determined skeptic could not stop himself from perceiving the supernatural?(白令想知道，為什么一個堅定的無神論者，居然無法阻止自己感知超自然的東西？)

Charles Golvin, a wireless analyst at Forrester Research, is a skeptic.(弗雷特斯研究公司的無線產品分析師查爾斯.戈爾萬，是個懷疑論者。)

There's no room in this culture for a skeptic.(中國這個文化里沒有懷疑論者的立足之地。)

Thomas, the skeptic, was a believer.(托馬斯，這個懷疑論者，成為了信徒。)

Originally, I was a skeptic on much of the higher-level stuff.(最初，我對許多較高層的內容都心存疑慮。)

You're a skeptic.(你是個懷疑論者。)

Even if you are a skeptic of my field, as many are, there is another, more cynical reason to study it.(縱使你跟許多人一樣，一直不太信任我所從事的這個行當，那么還有另外一個，或許更為悲觀的研習經濟學的理由。)

Graham started off as a real skeptic but quickly turned around.(格雷漢姆一開始也是一個懷疑者但很快就轉變了看法。)

A skeptic might conclude that practitioners are afraid to lay their beliefs on the line.(持懷疑態度的人可能會得出結論說，從業人員害怕坦白自己的信念。)