大家在查： appendectomy 阿拉维派十到二十 gaits 为期一个 is being senior colleague cobweb Qaeda 键集

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踩滑

one-step是什么意思_one-step怎么翻译及发音... ... miss one's step 失足,踩空,踩滑 watch one's step v. 走路小心,谨慎 ...

I went to work the next day and, as usual , stood on the garbage bin, ready to dispose of the litter. Suddenly my feet slipped and I fell!

Well, this morning I must have slipped or something, because I fell over the edge.