美国刚刚宣布，阻碍会谈进展的最大障碍之一已被去除。
America had just announced that one of the biggest obstacles to progress had been removed.
超滤技术的两个最主要障碍为对有机物去除效果差和膜污染问题。
Low Organic matter removal rate and membrane fouling are two key problems.
超滤技术的两个最主要障碍为对有机物去除效果差和膜污染问题。
Low Organic matter removal rate and membrane fouling are two key problems.
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