It plans to launch two cargo craft, two Shenzhou spaceships and two laboratory modules of China's planned space station within the year.

计划在今年内发射两艘货运飞船、两艘神舟飞船和中国计划中的空间站的两个实验舱。

The problem happened on July 29 when engines on Russia's Nauka laboratory module fired shortly after it arrived at the International Space Station.

问题发生在7月29日，当时俄罗斯科学号实验舱的发动机在它对接国际空间站后不久就启动了。