1. maintain low and order maintain his family = suport his family maintain friendly relations
maintain a high speed 保持 Food is necessary to maintain life.
2. major 主要的 The cars needs major repairs.车要大修 a major discover 重大发现
a major question major in = specialize in 主修the majority of 大多数的
3. make We made the airport in half an hour. 赶到 make a cup of coffee
make an effort 做出 make a promise make a plan 制定 make a price
