n (esp pl 尤作复数)
1 thing depended on or needed 依赖的或需要的事物
*Our immediate requirement is extra staff. 我们亟需增加工作人员.
* stock surplus to requirements, ie more than is needed 超过需要的存货
* Our latest model should meet your requirements exactly, ie be just what you want. 我们的最新型号包你满意.
2 thing ordered or demanded 规定的或要求的事物
*Not all foreign visitors satisfy/fulfil legal entry requirements. 并非所有外宾均符合入境规定.

n [C usually plural]
something that someone needs or asks for
　The refugees' main requirements are food and shelter.
requirement of
　Potatoes can provide one-third of our daily requirement of vitamin C.
meet/fulfil/satisfy a requirement
(=have or do what is necessary)
　The new computer system will meet all our requirements.
surplus to requirements
BrE (=more than is needed)
　The increase in gas-fired power stations means traditional coal ones are becoming surplus to requirements.
something that must be done because of a law or rule
　If you are installing a new bathroom, it has to meet the requirements of the Building Regulations.
　Two measures have been introduced as legal requirements .
something, especially good examination results, that a college, employer etc says you must have in order to do something
requirement for
　English 4 is a requirement for English majors.
　To find out about entry requirements for students, write to the college admissions board.
　The minimum requirement for the post was a degree in engineering.