得知不能使用家電，他們才發(fā)現沒有省力的設備，做家務十分困難。（until；inform）（漢譯英）
It wasn't until they had been informed that household appliances could not be used that they realized that it was very difficult to do household chores without labor-saving equipment.
It wasn't until they had been informed that household appliances could not be used that they realized that it was very difficult to do household chores without labor-saving equipment.
