The baby was sitting in his high chair, red in the face and bawling.那个婴孩坐在高脚椅上，满脸通红，嚎啕大哭。High chairs should have a harness to stop the child from slipping under or standing up.高脚椅应该有背带，防止孩子滑落或站立。Elmer was happily sitting in his high chair.埃尔默高兴地坐在高脚椅上。