heat up
phrasal verbheat up
- to become hot or warm
变热；变暖 - The oven takes a while to heat up.
烤箱得过会儿才能热起来。
- The oven takes a while to heat up.
- (British English also hot up)to become more exciting or to show an increase in activity
激烈起来；更加活跃 - The election contest is heating up.
选举竞争正趋于白热化。
- The election contest is heating up.
heat something up
- to make something hot or warm
使变热；使变暖 - Just heat up the food in the microwave.
把食物放在微波炉里热热就行了。
- Just heat up the food in the microwave.