During its operation in orbit, Tianzhou-2 carried out a series of extended application tests.

天舟二号在轨运行期间，进行了一系列扩展应用试验。

The evidence is clear-and was, in a way that all but only the most recalcitrant can deny, made plain again in the extended endurance test that began in March 2020.

证据很清楚，而且在2020年3月开始的延长耐力测试中，只有最顽固的人才能否认这一点。