Guitarists now worry that every time they cross a state border with their instrument, they will have to carry sheaves of documents proving that every part of it was legally sourced.
吉他手现在携带他们的乐器穿越州界时总是会担心，因为他们不得不同时携带大量文件证明吉他上的每个部件都有合法来源。
The two researchers were able to cross-check the time to an accuracy of one in 1016, an exercise proving that such clocks can be interlinked over electronic and optical circuits.
两位研究者就可以以10的16次方分之一的精度反复核对时间，这证明这样的原子钟可以通过电学和光学电路连接起来。
The market tried to cross above the moving averages yesterday but failed with the 14 day moving average proving a good resistance level.
昨日市场尝试冲破高于移动平均线的位置但未能成功，14日移动平均线为良好的阻力位置。
The market tried to cross above the moving averages yesterday but failed with the 14 day moving average proving a good resistance level.
昨日市场尝试冲破高于移动平均线的位置但未能成功，14日移动平均线为良好的阻力位置。
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