life vest的音标：...

n.救生衣...

There's life vest under your seat for water emergencies.您的座下有一件救生衣在发生水上紧急情况时用.There's a life vest under your seat for water emergencies.你的座下有一件救生衣,发生水上紧急情况时候用.There is a life vest under your seat for water emer...