名詞 troll:

1. (Scandanavian folklore) a supernatural creature (either a dwarf or a giant) that is supposed to live in caves or in the mountains
2. a partsong in which voices follow each other; one voice starts and others join in one after another until all are singing different parts of the song at the same time
   同義詞：round
3. a fisherman's lure that is used in trolling
4. angling by drawing a baited line through the water
   同義詞：trolling

動詞 troll:

1. circulate, move around
2. cause to move round and round
3. sing the parts of (a round) in succession
4. angle with a hook and line drawn through the water
5. sing loudly and without inhibition
6. praise or celebrate in song
7. speak or recite rapidly or in a rolling voice

1. He trolled a song.
   他很歡快地唱一支歌。