(not before a noun不用于名词前) certain (that…) | certain (of sth) completely sure; without any doubts确定；无疑◆Police are now certain that the explosion was not an accident.警方现在确定这起爆炸不是偶然事件。◆The events may be connected, but we cannot be certain.这些事件或许有关联，可是我们还不能确定。◆Scientists are not yet certain what causes this to happen.科学家还无法确定是什么导致这种情况发生。◆Officials are not absolutely certain of the effects of this decision.官员们对这一决定的效果没有绝对把握。
certain (that…) | certain (to do sth) sure to happen or to do something; definite确定；肯定◆It is almost certain that unemployment will increase this year.几乎可以肯定今年的失业率会上升。◆The principal is certain to agree.校长肯定会同意。◆Nothing is certain right now. Wait and see.眼下什么都不确定，等等看吧。◆If sales do not increase, the company will face certain bankruptcy.如果销售量不增长，公司必然面临破产。 |