spare
The Italian word 'di riserva' is often used to describe an extra item that can be used as a replacement or backup. It is commonly used to refer to spare parts, spare tires, or spare change. For example, 'Ho bisogno di una ruota di riserva' means 'I need a spare tire'.
I have a spare bottle at home.
In this sentence, 'di riserva' is used to indicate the presence of an additional or backup item. The Italian phrase is signaling that there's an extra bottle at home, serving as a backup to the item that is usually used.
The reserve tank is full of gasoline.
In this context, 'di riserva' is used to describe a secondary or backup fuel tank. In English, the equivalent phrase 'reserve tank' is used to describe a tank which is kept full and ready for use when the primary fuel source is exhausted.
We have a backup team ready.
Here, 'di riserva' refers to a secondary group, prepared to take the place of the main team if necessary. The term 'backup team' in the English translation serves the same purpose, implying readiness to step in when the primary team is not available or unable to perform a task.