v.hot up 激烈起来,更加活跃( hot的现在分词 );
例句:
The title race is hotting up.
切尔西与曼联的冠军争夺战已接近白热化.
The presidential election is suddenly hotting up.
总统竞选陡然升温.
Industrial troubles are hotting up in the North.
北方的工潮日益严重.