The infinite distances of space are too great for the human mind to comprehend.太空的无垠距离遥远得让人类的大脑无法理解。The bat judges distances by a kind of echo - location.蝙蝠用一种回声测定法来判断距离.The eye can accommodate itself to seeing objects a...
囚犯们在监狱墙下挖地道逃跑了.The convicts undermined the prison wall and escaped.救援人员挖地道通向那些探察洞穴的人.The rescuers tunnelled their way ( in ) to the pot - holers.他们在围墙下面挖地道通向远处的树林.They tunnelled along under the walls and up into the wood...