The target is seven-tenths of 1% of gross national income.
这项标准是援助达到国家粗收入的千分之七。
2
But, Schmidt says, the combo antimatter fusion engine could not likely generate the thrust needed to get up to seven-tenths light speed.
不过施密特也指出,混合反物质聚变发动机产生的推力很可能达不到所需的7/10光速。
3
Slower cruising — at about Mach 0.7, or seven-tenths the speed of sound, which is 5 percent to 10 percent slower than today's aircraft — and at higher altitudes, to save fuel.