adjective [原级]快的，迅速的；系牢的，紧缚的；寻欢作乐的；不褪色的；忠实的，可靠的The only question is how fast the process will be.惟一的问题是这个过程会有多快。
adverb [程度副词]快速地；坚定地，牢固地It would be nice to go faster and break the world record.再快一些，打破世界纪录就好了。
verb [vi. 不及物动词]斋戒，禁食I fasted for a day and a half and asked God to help me.我禁食了一天半，请求上帝帮助我。
noun [专属名词]斋戒，斋戒期The fast is broken at sunset, traditionally with dates and water.日落时开斋，按传统会吃海枣、喝水。