have its (or one's) uses
- be useful on certain occasions or in certain respects
- be useful in certain respects
... electricity in 18th century, ---> Since humanbeings have discovered electricity in 18th century, In order to enjoy modern life or...
...check and keep track of time. Educated Indians have learnt to adapt to the western methods of monitoring one’s own work and completing it on schedule.（在評論一個人的想法或做事方式時，需要提出...
... one moved the sword in the air, it would give out green light and make one's ear ring. The sword had ben used by several people who had killed ...