整天all day long
长耳的,驴似的,愚钝的long-eared
长末端重复序列long terminal repeat, LTR
叹息sigh ; draw a long breath
污染物的长期效应Long-term effects of pollutants
【经】 长期预测long-term forecast
胡子工程long-drawn-out project (a project which takes so long that young workersbecome bearded)
十三个a long dozen