exists , existing , existed
If something exists, it is present in the world as a real thing.
occur , be found , be present
He thought that if he couldn't see something, it didn't exist.
他认为自己看不见的事务就不存在。
Research opportunities exist in a wide range of areas.
众多领域都存在着研究机会。
animals that no longer exist.
不再存在的动物。
To exist means to live, especially under difficult conditions or with very little food or money.
I was barely existing.
我勉强度日。
Some people exist on melons or coconuts for weeks at a time.
一连数周靠吃各种瓜果或椰子生存。