riddle/ˈrɪd.əl/动词使布满洞孔The anti-aircraft guns riddled the plane's wings with bullets.高射炮炮弹把机翼打得千疮百孔。/ˈrɪd.əl/名词谜;谜语Scientists may have solved the riddle of Saturn's rings.科学家们或许已经揭开了土星环的奥秘。想跟读,去练习