People inherit mitochondria only from their mothers , which is why only the female line of descent can be tracked using them .
人类只从母亲一方遗传线粒体上的信息,这就是为什么通过这种方式只能追踪母系血统。
Mr ouattara , a muslim by background , is married to a french woman of jewish descent who is a catholic convert .
瓦塔拉总统出身于穆斯林之家,娶了一位已经皈依基督教的犹太血统法国籍妻子。
I believe god made me gay and it is not a choice , no more than I chose to be of polish and german descent .
我相信是上帝让我成为一个同性恋,这不是选择,我选择的只能是波兰和德国的血统。
Next it will cut away the parachute and ignite its descent engines to slow down further .
随后,飞船将切断放开降落伞并启动其降落引擎,以进一步降低其着陆速度。
His main parachute opened about 20 seconds or so short of the record of 4 minutes 36 seconds for unassisted descent .
主降落伞打开前,他的自由落体过程持续的时间仅比4分36秒的无辅助降落纪录短约20秒。
2004 : The cassini orbiter releases the huygens probe to begin its descent to titan , saturn 's largest moon .
2004:卡西尼人造卫星释放出惠更斯探测器,使其降落到土星最大的卫星泰坦。
Nasa and industry partners have demonstrated this type of engine control capability to help design a more reliable and robust descent engine that could be used to land space exploration vehicles on the moon , an asteroid or another planet .
One hundred hours and 12 minutes into the mission , the command / service module columbia releases the lunar module eagle for its descent to the sea of tranquility .
It was built originally because vehicles could not cope with the 27 % gradient so it was suggested that switchbacks of hair pin bends were built thereby making the ascent or descent more manageable .
Some residents said her release offered the first hope in years that the country 's military regime , which has overseen myanmar 's descent into one of the poorest countries in the world since taking over in 1962 , will change .