别让拖地的皮线挡了道，这样你就不会被绊倒。Make sure trailing flexes are kept out of the way so you don't trip up over them.他差点被绊倒。He stumbled and almost fell.在等了这么久之后,能走得不被绊倒就足以让人们感到欣慰了.Walking without tripping was enough after such a l...