"There is no perfect contraceptive method, so there will always be abortion."

VOA: standard.2010.06.24

So any time I draw these molecular orbitals, I do my best, and I'm not always perfect, yet trying to make this energy different exactly the same for the anti-bonding orbital being raised, versus the bonding orbital being lowered.

所以我在画这些分子轨道的时候，虽然不是很完美，但我总是尽量,让反键轨道引起的，能量升高和成键轨道。

麻省理工公开课 - 化学原理课程节选

And has a very tiny waist and long hair that's always perfect.

她有着纤细的腰与一头完美的秀发。

remind me of 课堂 - SpeakingMax英语口语达人

It has been tempered in a celestial fire in ether, and it was the ether of the ethereal heavens that had always been thought -throughout the Renaissance and long before, of course -- to be the most perfect substance imaginable.

它是在广阔苍穹的天国之火中被锻造出，也是飘渺的天堂中的以太,不断地被提及,-贯穿于文艺复兴的始终，当然--是可想见的最完美的物质。

耶鲁公开课 - 弥尔顿课程节选

And there's always a group of people who think, yes, life on the experience machine is perfect as long as you've got the right tape playing.

而且总是会有一些人认为，没错，体验机器里的生活十全十美,只要你放对了带子。

耶鲁公开课 - 死亡课程节选

OK. In a perfect world, the weather would always be like it's been this week.

好，在一个完美的世界里,天气永远按计划好的来，MIT中的那个。

麻省理工公开课 - 计算机科学及编程导论课程节选

She's always in perfect suits, you know, pastel colours, all matching.

她总是穿着完美的套装，柔和的颜色，搭配绝佳。

皇室的绯闻 - SpeakingMax英语口语达人