He stopped there for a moment to pick five smooth, round stones out of the clear water.
他在那里停了一会儿，从清澈的水里捡出五块光滑的圆石头。
Micro - occlusion was more important for tougher surfaced natural fibers than for smooth, round man - made fibers.
微观的吸留现象在表面粗糙的天然纤维上比在光滑的圆形化学纤维上较为重要。
Micro - occlusion was more important for tougher surfaced natural fibers than for smooth, round man - made fibers.
微观的吸留现象在表面粗糙的天然纤维上比在光滑的圆形化学纤维上较为重要。
应用推荐