He noticed his dog, Ace, a four-year-old dutch shepherd, was excited by a scent he had apparently picked up.

刘雷注意到了自己的狗，满分。 满分是一只四岁的荷兰牧羊犬，嗅到主人特意挑选的味道显得很兴奋。

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Here's the promise: if you can satisfy these four goals - regardless of what specific strategies or systems you use - you will ace your courses.

我保证：如果你能达到这四个目标—不管你用什么方法—你就能拿下你所有课程。

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The Portuguese ace notched the record breaking number 39 after just four minutes and slammed home his second in the 76th.

葡萄牙王牌在第四分钟就打入一球，第七十六分钟他再下一城创造了新的纪录。

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Udacity, another major MOOC provider, announced last month that it, too, is seeking ACE recommendations for four of its courses.

WSJ: Big MOOC Coursera Moves Closer to Academic Acceptance

Former Mets ace Dwight Gooden sat four rows behind home plate, updating Harvey's K count on Twitter, as usual.

WSJ: Mets rally to beat Rivera and Yankees, 2-1

Tigers pitching ace Justin Verlander only managed to go four innings, allowing five runs on six hits.

CNN: October 25, 2012 -- Updated 1019 GMT (1819 HKT)