If someone in your circle is making reference to something, it's likely important enough that you should be aware of it.

如果你交际圈子中的人提到某件事，这表明它可能是比较重要的，你应该知晓它。

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Formulas are given in many mechanical manuals to calculate the tooth thickness at only the reference circle of worm and worm wheel.

蜗轮蜗杆的分度圆齿厚在大部分机械手册中都给出了计算公式，但在其它任意半径处的齿厚计算很少有资料涉及。

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Peak power with micro marketing review: a shot in the refresh circle of friends how wechat business promotion is still in groping, all kinds of excellent patterns are available for reference.

顶峰助力微营销跟评：朋友圈刷屏中枪，微商如何推广仍在摸索，各种优秀模式皆可借鉴。

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But he was eventually talent-spotted by Lord Browne, and became one of his Turtles (a name Browne gave to his inner circle of high fliers) - a reference to the fearsome cartoon warriors, the Teenage Mutant Ninja Turtles.

BBC: BP chief executive Tony Hayward