The intake process is the key part to the working circle of the engine.

发动机的进气过程是发动机工作循环的关键所在。

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For those connected to the right social circle, working as a wardrobe consultant could pay well enough to be considered a full-time job.

FORBES: Shop For High Fashion in the Comfort of Your Own Home

Later, the president has a working lunch with a small circle of cabinet members and advisers.

CNN: ERAP'S BIG ROLE

As our economic recovery continues, we must keep working to give them the security they deserve, and to widen the circle of opportunity for all who are working hard to get ahead.

WHITEHOUSE: Presidential Proclamation -- National Family Week, 2012