公交车: public transport vehicle, town bus...
磕: knock (against sth hard)...
海绵: sponge (zoology), sponge (piece of absorbent material, either natural or made from plastic etc), foam rubber...
为何: why...
移: to move, to shift, to change, to alter, to remove...
围: to encircle, to surround, all around, to wear by wrapping around (scarf, shawl)...
早: early, morning, Good morning!, long ago, prematurely...
推行: to put into effect, to carry out...
