CONJ-COORD
不仅…而且…；…和…都；既…又…
You use the structure both...and when you are giving two facts or alternatives and emphasizing that each of them is true or possible.
例句
Now women work both before and after having their children...
现在妇女在生孩子前后都要去工作。
Any such action would have to be approved by both American and Saudi leaders.
任何这样的行动都必须获得美国和沙特领导人双方的批准。