“gig economy”意思是：灰色经济。
短语：
1、ideas of grey agricultural economy灰农经济观
例句：
1、The World Bank and other international financial institutions estimate the grey economy to be at least equal to that of the official economy.
世界银行和其余国际组织估计灰色经济至少和官方经济持平。
2、The report says many irregular migrants who have lost their jobs move into the so-called grey economy, where they become vulnerable to exploitation.
这份报告指出，很多失去工作的非正式移民转入了所谓的灰色经济领域，这使得他们很容易受到剥削。
3、Unemployment figures are high—two-thirds of young people are jobless—because the grey economy is huge.
失业率很高， 因为经济极度萧条，由此而导致了三分之二的年轻人找不到工作。
4、China appears to have a huge "grey" economy, meaning that it is fueled by grey or unreported income.
在中国似乎存在一个巨大的“灰色经济”体，即它是由灰色或隐瞒收入所推动的。
5、The grey system theory has been greatly developed and applied in social economy since grey theory was estabished in 1982 .
灰色系统理论自从1982年首次提出后，已在社会经济中得到广泛的应用，并取得了许多成果。