He became too fat to run quickly.
他太胖了，跑不快了。
Like stars, brown dwarfs are capable of fusing a rare form of hydrogen called deuterium, but they are too lightweight to burn ordinary hydrogen and quickly run out of fuel.
同恒星相类似，棕矮星能够融化氢原子，但它们重量太轻，它们还不能把融化氢的过程持续下去。
The same thing can happen if you gulp air when snacking on the run, eating too quickly, talking while eating or drinking from a straw.
如果你一边小跑一边吃零食、吃得太快、边吃东西边说话，或者用吸管饮水时吞下空气，都会产生类似情况。
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