On the one hand, it's difficult to screw up all these well-intentioned people by crafting bad policy, but, on the other hand, it is of course entirely possible to do so.
一方面，精心制定坏的政策，把所有聪敏的人们都搞垮，也不是很容易的；另一方面，当然完全有可能发生。
2
In the beginning, the first attack subs consisted of a man hand-cranking away in a wood and leather suicide tube while attempting to attach explosives to a battleship using a wooden screw.
最初，第一艘攻击型潜艇上装载有一个木制手动升降柄和皮革爆炸管，爆炸管用来把炸药用木钉固定在舰船上。
3
The other components of the case such as the rotating bezel also require a hand finish, particularly for drilling the screw thread and polishing.