If the population of the earth goes on increasing at its present rate, there will not be enough resources left to sustain life on the planet.
如果地球上的人口继续以现在的速度增长，所剩的资源将不足以维持地球上的生命。
If the population of the earth goes on increasing at its present rate, there will not be enough resources left to sustain life on the planet.
如果地球上的人口继续以现在的速度增长，所剩的资源将不足以维持地球上的生命。
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