Using solar arrays saves weight that can be used to enhance safety and launch more cargo.
而使用太阳能电池阵列则节省重量，有利于加强安全和装载更多的货物。
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But it was a birdlike tail that really amped up the aerodynamics, dampening the drag from the body and wings, as well as boosting the lift that lags under vehicle weight and cargo load.
Some 5% of the world's seagoing traffic passed through it in 2005, including over a third (by weight) of cargo going from North-East Asia to the United States' east coast.