简言之就是：

n.消耗量，消费量；消耗，消费，挥霍

繁言之就是：

consumption

noun

[mass noun]

the using up of a resource

（资源）耗尽；消耗

industrialized countries should reduce their energy consumption.

工业化国家应该减少能源消耗。

■the eating, drinking, or ingesting of something

吃；喝；摄取

liquor is sold for consumption off the premises.

酒类是外卖的。

■[in sing.]an amount of something which is used up or ingested

消耗量；消费量

a daily consumption of 15 cigarettes.

每天抽掉15支烟。

■the purchase and use of goods and services by the public

消费

■the reception of information or entertainment, especially by a mass audience

（尤指大量观众、听众）观看（或收听）的节目

his confidential speech was not meant for public consumption.

他作的秘密讲话不打算向公众报道。

(dated)a wasting disease, especially pulmonary tuberculosis

(旧)销蚀性疾病；身体耗损；痨病（尤指肺结核）