After those six seconds, a shuttle? S twin solid rocket boosters ignite, explosive bolts holding the spacecraft down are severed and the entire stack soars spaceward.
6秒之后，航天飞机的双固体燃料火箭推进器点火，固定航天器的爆炸螺栓切断，整个航天飞机一飞冲天。
2
In 2008, I reached out to six friends and asked them to form a "Council of Dads" to be present in the lives of my twin daughters.
在2008年，我找到6位朋友，央他们组成“父亲联盟”，(要他们)在我双胞胎女儿的生命中保驾护航。
3
Here are six best practices that can help you overcome the twin challenges of increasing user demands and more complex data sourcing requirements.