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16-10-04 britain is to start building a wall in the northern french port of calais to stop migrants jumping on trucks, under a deal agreed earlier this year, the interior ministry said wednesday. 英国内政部上周三表示，根据今年早前达成的协议，英国将在法国北部...

15-11-26 the world-famous australian reef is providing an effective barrier against landslide-induced tsunamis, new research shows. what has developed into the great barrier reef was not always a barrier reef - it was once a fringing reef and did not offer t...

09-11-09 tiny metal particles have been shown to cause changes to dna across a cellular barrier - without having to cross it. 微小的金属粒子可以隔着细胞屏障改变dna，而不必穿过它。 the study used fibroblast cells to illuminate the cell signalling the nanometr...