surefire

These products are promoted as surefire cures for various diseases.

这些产品被当作包治百病的良药来促销。

There is no easy or surefire way to fill vacancies.

填补职位空缺并无轻松或保证成功的方法。

This is a surefire way to destroy employee morale.

这只会是一种必死无疑地损害员工士气的举动。

Eating late at night is a surefire way to cause insomnia.

晚上吃夜宵是一定会引起失眠的。

Here, it seems, is a surefire business-losing proposition.

看起来，这是个万无一失的亏本生意主张。