On Valentine's Day in high school, student council sold carnations that would be delivered to your friends in first period.

高中时的情人节，学生会卖送给你一年级的朋友的康乃馨。

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The final two months were a miserable coda to the President's first period in office.

总统首届任期的最后两个月非常糟糕。

《牛津词典》

The name of the Chongyang Festival first appeared in the Three Kingdoms Period.

重阳节的名称最早出现在三国时期。

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A recent UN report found the number of civilians killed increased by 24 percent in the first six months of this year compared to the same period in 2008.

VOA: standard.2009.08.07

It was implanted into the first patient, a gentleman in Kentucky, and he stayed alive for a period of time with this device replacing his heart.

第一个植入这个人工心脏病人是,住在肯塔基州的一位先生,他在移植手术后,存活了一段时间

耶鲁公开课 - 生物医学工程探索课程节选

The style of warfare that emerges in this period, apparently for the first time, is what we call the hoplite phalanx and each half of that needs to be explained.

显然,这个时期第一次出现了,一种独特的战争形式,那就是重步兵方阵,我来给大家分别解释下这两个词

耶鲁公开课 - 古希腊历史简介课程节选

Nabokov was sharp for the Islanders in the first period, stopping three point-blank shots in the first six minutes and two breakaways by Kevin Porter later in the period.

WSJ: Vanek lifts Sabres over Isles in season finale

New Jersey, which didn't have a shot in the opening 7:25 and had only four in the first period, found its legs in the second.

WSJ: Islanders upend Devils 3-1

Rangers forward Ryane Clowe (suspected concussion) remained out, and New York also lost Darroll Powe in the first period when the forward was elbowed in the head by Washington's Joel Ward.

WSJ: Rangers D Staal returns from serious eye injury