Focus on the pronunciation of slow (sb/sth) down/up
English definition of “slow (sb/sth) down/up”
slow (sb/sth) down/up — Phrasal Verb with slow
/sləʊ/ verb [I or T]
› to become slower or less active, or to make something slower or less active: Growth in the business slowed down rather than increasing as expected.slow down the pace/rate of sth US employers slowed down the pace of hiring last month. "We see no signs of the demand slowing up," he said.