Meaning and Usage
The word "备用" (bèiyòng) refers to something prepared or reserved for backup or emergency use. It is commonly used to describe spare items, such as batteries, keys, or parts, that are kept ready in case the primary ones fail or are lost.
Common Contexts
"备用" is often used in daily life and technical contexts where having a backup is important. For example, "备用电池" (spare batteries), "备用钥匙" (spare key), and "备用零件" (spare parts) are frequent collocations.
Collocations and Patterns
- 备用电池: spare batteries, used to ensure devices keep working.
- 备用钥匙: spare key, kept in a safe place to avoid lockout.
- 备用方案: backup plan, an alternative plan prepared in advance.
Usage Notes
When using "备用," the speaker implies preparation and caution. It often carries a practical tone and is neutral in formality, suitable for both spoken and written language. Avoid confusing "备用" with "准备" (to prepare), as "备用" specifically emphasizes the reserved or backup nature of the item or plan.