on the sly 偷偷地
smell of有的气味
be sorry about/for懊悔的,后悔的,难过的
speak ill of说的坏话;
speak well of说的好话
specialize in 专门研究,专攻
in spite of 尽管
on the pot 在现场,在出事地点;或 立即
take a stand against 采取某种立场反对
take a stand for 采取某种立场支持
stare at 目不转睛地看,凝视,盯着
in step 步伐一致;out of step 步伐不齐