have the ball at one's feet ·有希望一蹴而就 。on the ball ·内行；在行 That banker is really on the ball. ·那位银行家的确很在行。 ·open the ball ·开舞，带头跳舞 ·带头做，开一个头 • have the ball at one's feet • 有希望一蹴而就 • on the ball • 内行；在行 • That banker is really on the ball. • 那位银行家的确很在行。 • open the ball • 开舞, 带头跳舞 • 带头做, 开一个头