n.一胎三婴中的任何一婴儿;
v.用抖动的声音说,用卷舌发音,发出抖动的声音( trill的现在分词 );
例句:
The birds were trilling in the trees.
小鸟在树间鸣啭.
The birds were trilling in the treetops.
鸟儿在树梢啭鸣.
The canary trilling away in its cage.
我巧妙地使金丝雀进出笼子.