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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 | 
