To safeguard something or someone means to protect them from being harmed, lost, or badly treated.
例：
They will press for international action to safeguard the ozone layer.
他们将竭力要求国际行动来保护臭氧层。
To safeguard something or someone means to protect them from being harmed, lost, or badly treated.
例：
They will press for international action to safeguard the ozone layer.
他们将竭力要求国际行动来保护臭氧层。