This association (which need not be invariable) casts doubt on the optimistic assumption that the positive growth rate of a population is evidence that it has yet to reach its optimum.
这种连系（无须是一成不变的）令人对所谓正数增长率表示人口还没有达致最佳点的乐观假定感到怀疑。
Are accompanying the shadow, whether to meet only after falling asleep, does the invariable distance let each other be uncomfortable, how long sleeps alone the alone dormancy the night also to want.
只有自己陪伴着影子，是否见面只在入梦以后，不变的距离让彼此难受，孤枕独眠的夜还要多久。
The interference wave has strong energy over whole time period of seismic records, and its frequency, phase and amplitude can be basically considered to maintain invariable.
这种干扰波在地震记录的整个时间段上具有很强的能量，并且其频率、相位和振幅可认为基本保持不变。
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