discourage
/dɪˈskʌrɪdʒ; dɪs`kəɪdʒ/ v
1 [Tn, Tn.pr]
~ sb (from doing sth) take away sb's confidence or hope of doing sth 使某人丧失（做某事的）信心; 使某人泄气
Don't discourage her; she's doing her best. 别泄她的气, 她正尽力做呢.
2
(a) [Tn] try to stop (sth) 设法阻止（某事物）
Parents should discourage smoking. 做父母的应该设法阻止子女吸烟.
(b) [Tn.pr] ~ sb from doing sth persuade sb not to do sth 劝某人不要做某事
Parents should discourage their children from smoking. 做父母的应该劝子女不要吸烟.