if you sleep soundly, you sleep very well and very deeply 酣(睡);(睡得)沉 in a way that is sensible or can be relied on 明智地;可靠地 Your information is soundly based. 你的信息是有根据的。 a soundly based conclusion 有充分依据的结论
completely and by a large amount 完全彻底地 strongly 坚固地;牢固地 very well, but not in an excellent way 不错地;很好但并非优异地 He played soundly throughout the first half of the match. 他在比赛的上半场打得很好。
(of physical punishment )体罚 severely 严厉地