underuse
🇺🇸
/ˌʌndərˈjuːs/
🇬🇧
/ˌʌndəˈjuːs/
using something less than necessary or expected
To prevent health issues, it's important to avoid the underuse of sunscreen.
为了防止健康问题,避免不足使用防晒霜是很重要的。