密码和代码
In this case, there's an antidote: cryptography, the use of codes and ciphers to protect information.───情况下，有解决办法：密码学，用密码保护信息。
device for deciphering codes and ciphers.───解电码或密码的装置。
cakes and ales───n.欢乐
highs and lows───高价与低价
park and rides───停车换乘；停放车辆后换乘公共汽车进城措施
pros and cons───正反两方面；赞成者和反对者
aches and pains───痛苦；不适；各种各样的病痛
airs and graces───做作；装腔作势
answer-back codes───回复密码