Unbuckle the children , starting with the oldest first ( who can then help the others ) .
先给孩子解开安全带,从最大的孩子开始,因为他可以帮助车内的其他人。
" Once they 're in space , they 'll unbuckle their seats ... they can look back at the earth and they can float around and they can become astronauts , " said sir richard .