You'd have a better chance of catching the train if you took a bus to the station instead of walking.
如果你不是步行而是乘公共汽車的話,那你就比較有可能趕上火車。
but one day, after heavy shower, I happened to be walking in my garden when I noticed a huge number of snails taking a stroll on some of my prize plants.
后來有一天,一場大雨后,我在花園里漫無目的散步,突然注意到許許多多蝸牛在我的一些心愛的花木上慢悠悠的蠕動著。