thereat

For when he had carried the consulship for a friend of his, against the pursuit of Sylla, and that Sylla did a little resent thereat, and began to speak great, Pompey turned upon him again, and in effect bade him be quiet.

因为有一次为他的一位朋友争执政官之职，与苏拉所推举之人，而获胜。在苏拉对此表不满而开始争吵的时，简直反唇相向，叫他不要多言。