Rescuers used props to stop the roof of the tunnel collapsing.救援人员用支柱防止隧道顶塌陷。She helped with the props.那时候她帮忙管道具.Wood is still extensively used for props.木材仍广泛地用于支柱....
这是该国面临的最紧迫的问题之一。It is one of the most pressing problems facing this country.最紧迫的问题是防洪.The most immediate problem is to control the floods.我有更紧迫的事情要做.I have more pressing things to attend to....