gàng gǎn
lever
pry bar
crowbar
financial leverage
jīn róng gàng gǎn
financial leverage
leveraging (i.e. buying shares on borrowed funds)
fēi gàng gǎn huà
deleveraging (i.e. paying off part of a leverage loan)
zī jīn gàng gǎn
(finance) leverage
gearing