问题在于，有些国家可能并不具备实施严格控制所必须的基础设施，而它们将首次对核材料进行管理。

The problem is that countries that may not have the infrastructure needed to enforce stringent controls will be managing nuclear materials for the first time.

youdao

(掌声)在明年核安全峰会(Nuclear Security Summit)上我们将推动的目标是，在4年之内使全世界所有处境危险的核材料得到妥善管理。

(Applause.) And next year at our nuclear Security Summit, we will advance our goal of securing all the world's vulnerable nuclear materials within four years.

youdao

我们的核材料没有发生过一起事故，这反映出我们的控制与管理机制是如何地有效。

There has not been a single incident involving our fissile material, which clearly reflects how strong our controls and mechanisms are.

youdao