On the day her son began school, she meditated on the uncertainties of his future.儿子开始上学的那一天,她就在考虑他未来的种种不确定因素了。She meditated on whether or not to return to school.她认真考虑过是否要回到学校。Silently she meditated revenge.她默默地计划着复仇。He meditated on the problem.他仔细斟酌着这个问题。