to hold an inconsequential job / to receive a cold reception / to be kept waiting for an assignment or audience / to be out in the cold / to be sidelined / to warm the bench / to cool one's heels
board / plank / plate / shutter / table tennis bat / clappers (music) / CL:塊|块[kuai4] / accented beat in Chinese music / hard / stiff / to stop smiling or look serious