widen/ˈwaɪ.dən/动词(使)变宽,加宽;放宽As it approaches the sea, the river begins to widen (out).随着河流接近入海口,河道开始变宽。(使)变宽;(使)变多;(使)变大His eyes/smile widened.他睁大了眼睛/大笑起来。想跟读,去练习