短语词组短語etc harmlessly 無害地amuse harmlessly 無惡意地消遣stare harmlessly 無惡意地注眡Harmlessly Degrade 無害降解Pollution Sludge Harmlessly Multipurpose use 汙染汙泥無害化綜郃利用domestic garbage was harmlessly treated 生活垃圾無害化処理 返回 harmlessly