vt.
保证，担保，确保：
I cannot ensure his being on time.
我不能保证他会准时。
No one can ensure that he'll come.
没有人能保证他会来。
If you want to ensure that you catch the plane,take a taxi.
如果你想确保赶上航班，那就叫辆出租汽车。
保证获得；使(某人)获得，保证给予，赋予 (to，for)：
This letter will ensure you a hearing