外匯存底

Outside; external; foreign; in addition; not belonging to a certain scope; referring to relatives on the mother's or wife's side; a role in traditional opera playing an elderly man.

To converge or flow together, like rivers; to gather or integrate; to remit money or exchange currency.

To exist; to survive; to keep or store something; to deposit money; to have or cherish in one's mind.

Function word; bottom; base; foundation; background; end of a period; draft; record copy.