But prophylactics have allowed farmers to pack chickens into conditions that would once have been considered unthinkably cramped and dirty.

但是，预防措施使得农民可以把鸡塞进曾经无法想象的拥挤、肮脏的环境中。

After they collapse and go boom, exploding stars often leave unthinkably dense neutron stars in their wake.

在它们坍塌并爆炸后，爆炸的恒星通常会在它们的身后留下难以想象的密集中子星。

And Matt says if that's the case ... MATT O'DOWD: Then there must be an unthinkably large number of them out there.

安妮：马特说，如果是这样的话… … 马特·奥多德：那么那里的人数一定多得难以想象。

But Isak, unthinkably simple as he was, grew afraid of the dark in the light summer nights, and saw Shapes and Things stealing past the window.

尽管他天真到不可思议， 但在明亮的夏夜里， 他开始害怕黑暗， 并且看到有形状和事物从窗户偷偷溜过。