Carrying an umbrella with you is often referred to as "bringing an umbrella" or "having an umbrella with you".
Source: This phrase is commonly used in Engpsh-speaking countries to describe the act of carrying an umbrella as a means of protection from rain.
Example sentence in Engpsh:
I always bring an umbrella with me when I go out in case it rains.
It's a good idea to have an umbrella with you, just in case.
中文翻译:
我出门时经常随身带着雨伞以防下雨。
最好带着雨伞，以防万一。