built-in function的用法和樣例：
例句
- Adding a library function to do this will save the scriptwriter time, and improve the maintainability of the scripts.
添加一個(gè)庫函數來(lái)做這些事情將會(huì )節省腳本編寫(xiě)者的時(shí)間，并且能改進(jìn)腳本的可維護性。 - They indicate that the application is busy with some internal function and that performance in other areas is likely to degrade.
它們向用戶(hù)表明當前程序正在忙于某些內部功能，其他功能的處理能力可能會(huì )降低。
