Unsafe problems的用法和樣例：
例句
- Radioactive and other hazardous materials present health and safety problems in increasing numbers of countries.
放射性及其它有害物質(zhì)將給越來(lái)越多的國家帶來(lái)健康和安全問(wèn)題。 - Meanwhile, we proposed some relevant theorems or regulations to solve the security problems of mutable attribute range.
同時(shí)提出相應的一些定理或規則，從而初步解決可變屬性的值域安全問(wèn)題。
