沿著.
向下.他們都是沿著的意思。具體點，怎樣使用？謝了go along 沿著（某條路）走go down下降，下去（以下是我引的）1.落下He got home before the sun went down. 太陽下山前他到了家。2.下降The price of eggs has gone down. 蛋價下降了。3.減弱The wind has gone down a little. 風(fēng)勢已減弱了一些。4.被記載This day will go down in history. 這一天將被記在歷史上