例句：
As the weather is so bad, we have to delay our journey.
因為天氣太糟糕，我們不得不推遲旅行。
Any new source of energy will be very welcome, as there is already a shortage of petroleum.
任何新型能源都將大受歡迎，因為石油已經(jīng)出現(xiàn)短缺。
As luck would have it, the train was late.
不巧火車晚點(diǎn)了。