keep up
US /kiːp ʌp/
UK /kiːp ʌp/

短语动词
1.
跟上, 保持
to continue to be at the same level or standard as someone or something else
示例:
•
It's hard to keep up with the latest technology.
很难跟上最新的技术。
•
She runs so fast, I can't keep up.
她跑得太快了,我跟不上。
在 Lingoland 学习这个单词