Technical term in monetary policy: central bank actions to offset the impact of foreign exchange intervention on the domestic money supply.
The central bank conducted open market operations to sterilize the impact of the foreign exchange intervention.
Without sterilization policy, the money supply would increase.
sterilized intervention
Compound of 不 (not) + 胎化 (conception/fertilization), literally 'non-fertilization', used as a calque for the economics term 'sterilization'.