Kiwi asks…
How can I use the expression "over time"?
Answer from a Native speaker

Rebecca
The phrase "over time" refers to something that happens gradually or progresses over a period of time. You can use this phrase whenever you are describing something that changes or continues over a long period of time. Ex: She didn't eat any vegetables when she was younger, but over time, she has begun to eat more. Ex: Our technology has continued to improve over time.
Listening Quiz
1/2 STEP LEARN