keep up on
英
美
- 跟上；不落后
双语例句
- I was put to it to keep up with his pace.
我跟上他是不容易的。 - They had to bring the card index up to date.
他们使得索引卡片跟上发展，不致过时。 - I had to run to keep up with the girls.
我得跑以跟上女孩子们不落后。 - While research on plants has taken the lead, work with farm animals does not lag far behind.
尽管植物的研究工作领先一步，牲畜的研究工作也并不落后。
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