The road to deciding on exactly how to measure the effects of all of these nifty optimizations wasn't so smooth.

但是要想设计出一种方法来判断这些巧妙的优化方法到底多有效，这条路并不平坦。

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This measure averages earnings over ten years to smooth out the peaks and troughs of the economic cycle.

这种测度方法将十年的收益平均，以消除经济周期的波谷和波底所带来的影响。

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Also using Mach-Zehnder interferometer the small difference between one produced smooth sphere and another standard smooth spherical can measure.

于此同理，用马赫—曾德尔干涉仪可以测量一个加工出来的光滑球面与另一个标准光滑球面之间的微小差异。

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Then peers turn to the Public Service Pensions Bill - a measure which makes big and painful changes, but which has had a surprisingly smooth passage through parliament.

BBC: Week ahead