動詞 slow up:

1. become slow or slower
   同義詞：slow, slow down, slack, slacken
2. cause to proceed more slowly
   同義詞：slow, slow down
3. lose velocity; move more slowly
   同義詞：decelerate, slow, slow down, retard

1. Business slows up at the stores after Christmas.
   過了圣誕節(jié)商店里就不那么忙了。
2. Slow up a bit, or you'll make yourself ill.
   別這麼賣力氣，不然你要累出病來的。