The ISS does have its own defenses, of course. Fabric-y buffers envelope some of the systems, and a bumper called the Whipple Shield helps blunt impact. That shield is only built to stop debris up to about 1 cubic centimeter, though, and the debris tracker is only designed to catch pieces 10 cubic centimeters and larger. In other words, there’s a gap in defenses.
现在的年轻人，带上一部手机和身份证，就能随时出发。
。快连下载安装对此有专业解读
In France, the CAC-40 index closed down 2.2%, while Germany's Dax extended earlier declines to close 2.6% lower.
As with his mum, dad and other siblings, the strategy has been to keep calm and carry on, and Cruz is going about the business of music with an air of exuberance and fun.