阅读的话可以配上一个词典划看不懂的词，有英文释义和例句，不能用英语解释的拿汉语标注
1，a , an
m1：one
m2：for each or to each
eg. apples cost 50p a kilo（50p == 50 penny）
eg. the car was travelling at 50 kilometres an hour
2，apiece
m：for each one
eg. Even poor consumers will pay a dollar or so apiece（or so == about == approximately）
3，abbreviation
m1：short form of a word
eg. 'Ltd' is the abbreviation for 'Limited'
4，aboard
m：on a ship or vehicle
eg. the truck ran into a bus with twenty passenger aboard（run into == bump into == knock into sb == dash against == hit）
5，abroad
m：over a wide area（in or to a foreign country or countries）
eg. we usually go abroad for a week in May
6，abortion
m：ending of a woman's pregnancy
7，about
m1：referring to
eg. he told me all about his operation
m2：to be about to do something == to be just going to do something （just == 正好）
eg. we were about to go home when you arrived
m3：in the process of doing something
eg. while you're about it , can you post this letter?（about == 考虑，while == 既然）
m4：how about or what about == what do you think
eg. we can't find a new secretary for the club - what about Sarah?
m5：approximately
eg. the table is about two metres long
m6：in various places
eg. there were papers lying about on the floor
eg. there is a lot of flu about during the winter months