免疫接种在改善全球儿童健康方面起着重要的作用。
Immunization has played a huge role in better child health throughout the world.
如果球儿提早了一秒飞来，你是否听任它消逝在风中？
If the ball arrives one second beforehand, will you yield it to the wind?
全球儿童期体重过重和肥胖症增多是若干因素造成的，包括。
Global increases in childhood overweight and obesity are attributable to a number of factors including.
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