从此: from this time on; from now on; from then on; henceforth; thereupon 短语和例子从此我的老师会更加严格。 from now onwards my teacher will be stricter. 他从此将会刻苦学习。 he will study harder from this time on
熟虑其后: consider maturely the consequences -- warn against carelessness; ponder over the consequence again and again