'Collateral should only be a backstop.'

抵押品应该只是一种防护。

That provides a backstop against cancer.

这一机制有助于对抗癌症。

The team needs a more reliable backstop.

这支队错要一个更加可靠的接球手。

My first kiss was behind the backstop of a baseball field.

我的初吻是在一个棒球场的挡网后。

And last week he unveiled a plan to backstop consumer debt.

上周他又推出了一个支持消费者债务的计划。