In most cases, we just don't knowhow many Britons contract diseases when abroad.
在大多数情况下，我们只是不知道有多少英国人在国外感染了疾病。
2
Some do not knowhow to look for a house for rent or how to read and negotiate a rental contract.
有些人不知道如何寻找出租的房屋，也不知道如何阅读和磋商租住合同。
3
Contract programming means that one class provides a contract to another — in other words: "Here is what I will do, and you don't need to knowhow it's done."