And all of them did repeated sprint tests.

他们都做了重复的冲刺测试。

North Korea is subject to a range of international sanctions for repeated missile test since 2006.

自2006年以来，朝鲜因多次进行导弹实验而受到系列国际制裁。

Tension was high in the area last year after North Korea carried out repeated tests of nuclear weapons and missiles.

去年，朝鲜在反复进行核武器和导弹试验后，该地区的局势一度紧张。

Intrigued by that discovery, the team put the crude sample they were working on through two rounds of chromatography, to split it into its constituents, and repeated the tests on these.

这个发现激起了研究团队的兴趣，他们对正在研究的原始样品进行了两轮色谱分析，将其分成不同的成分，并对这些成分进行重复测试。