(noun.) the arithmetic operation of summing; calculating the sum of two or more numbers; 'the summation of four and three gives seven'; 'four plus three equals seven'.
(noun.) a concluding summary (as in presenting a case before a law court).
(noun.) (physiology) the process whereby multiple stimuli can produce a response (in a muscle or nerve or other part) that one stimulus alone does not produce.
迪尔德丽手打
巴顿整理