Chondroid chordoma occurred in a younger age group (mean age 40. 9 years) than classic chordoma (mean age 51. 1 years).

软骨样脊索瘤发病年龄(平均40.9岁)较经典型(平均51.1岁)年轻。

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There should be no apostrophe because what you mean is that the decision belongs to the group.

VOA: special.2010.02.11

I mean, you would expect that the group one, absent hydrogen, would be the ones that would have the least.

我想，你们可能认为第一主族，没有氢，而氢应该是最小的。

麻省理工公开课 - 固态化学导论课程节选

But when you call something "canon," you mean that there's a group of writing that has boundaries to it.

但是当你称某样东西为正典时,便是指那些有界限的书籍。

耶鲁公开课 - 新约课程节选

Since the study also claims that individual intelligence have no relevance at all to the group intelligence, does it mean a group with none of member within it can solve a specific math or physics problem can all of a sudden miraculously be able to solve the problem by providing at least three women?

FORBES: Speak Up! More Women Make Team Smarter

The results from the weekend's Group A matches mean Al Hilal are top of the group with 12 points.

BBC: Sfaxien, FUS Rabat seal Confed Cup semi final places

They all get to talk as a group and it can mean a lot to a person.

BBC: NEWS | Health | How gadgets will aid elderly at home