Our foreign trade policy has always been based on equality and mutual benefit and exchange of needed goods.
我们的对外贸易政策一向是以平等互利、互通有无为基础的。
The currents of air that the walls of the ship direct upwards, as well as in the line of its course, are enough to give the great bird with its immense wings sufficient sustenance and progress.
沿船体的上升的气流和沿航线向前的气流给这种巨翼大鸟以足够的浮力和推力。