短語詞組短語straight t face 直線工祖;不顯現(xiàn)表情的臉straight -face test 測謊考騐plain -straight-face flange 平麪法蘭plain straight face flange 平麪凸緣keep a straight face 板著臉straight face piston ring 圓柱麪活塞環(huán)with a straight face 繃著臉kept a straight face 不露笑容 返回 straight face