For example, did you know that 1 in 4 teenagers has tried marijuana?
比如,你是否知道4个青少年中就有1位曾经吸过大麻?
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.
后来有一天,一场大雨后,我在花园里漫无目的散步,突然注意到许许多多蜗牛在我的一些心爱的花木上慢悠悠的蠕动着。