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useful
01
役に立つ, 有用な
providing help when needed
02
便利な, 役立つ
serving a practical purpose or providing benefit in some way
useful
adj
use
n
usefully
adv
usefully
adv
usefulness
n
usefulness
n
例
A reliable GPS navigation system is especially useful during road trips to unfamiliar destinations.
Online tutorials can be a useful resource for individuals seeking to acquire new skills.
A supportive friend who offers advice and comfort can be incredibly useful during challenging times.
Having a mentor at work can be useful in guiding career decisions and providing valuable insights.
The first aid kit is packed with supplies, making it incredibly useful in emergencies.
