And moreover, (to speak of) the accumulation of water; if it be not great, it will not have strength to support a large boat. Upset a cup of water in a cavity, and a straw will float on it as if it were a boat. Place a cup in it, and it will stick fast; the water is shallow and the boat is large. (So it is with) the accumulation of wind; if it be not great, it will not have strength to support great wings. Therefore (the peng ascended to) the height of 90,000 li, and there was such a mass of wind beneath it; thenceforth the accumulation of wind was sufficient. As it seemed to bear the blue sky on its back, and there was nothing to obstruct or arrest its course, it could pursue its way to the South.
Lin Yutang (1942):
If there is not sufficient depth, water will not float large ships. Upset a cupful into a hole in the yard, and a mustard-seed will be your boat. Try to float the cup, and it will be grounded, due to the disproportion between water and vessel. So with air. If there is not sufficient a depth, it cannot support large wings. And for this bird, a depth of ninety thousand li is necessary to bear it up. Then, gliding upon the wind, with nothing save the clear sky above, and no obstacles in the way, it starts upon its journey to the south.
Feng Youlan (1964):
Without sufficient depth, the water would not be able to float a large boat. Upset a cup of water into a small hole, and a mustard seed will be the boat. Try to float the cup, and it will stick, because the water is shallow and the vessel is large. Without sufficient density, the wind would not be able to support the large wings. Therefore, when the peng ascends to the height of ninety thousand li , the wind is all beneath it. Then, with the blue sky above, and no obstacle on the way, it mounts upon the wind and starts for the south.
Burton Watson (1968):
If water is not piled up deep enough, it won't have the strength to bear up a big boat. Pour a cup of water into a hollow in the floor, and bits of trash will sail on it like boats. But set the cup there, and it will stick fast, for the water is too shallow and the boat too large. If wind is not piled up deep enough, it won't have the strength to bear up great wings. Therefore when the Peng rises ninety thousand li, he must have the wind under him like that. Only then can he mount on the back of the wind, shoulder the blue sky, and nothing can hinder or block him. Only then can he set his eyes to the south.