keep up on
英
美
- keep v.(使)保持;继续;使耽搁;使延误n.生活必需品;生活费用;城堡主楼网络保存;保留;坚持
- on prep.在...之上;由...支撑着;在(某一天);关于;基于adv.穿着;向前(移动);表示持续性adj.表示已连接、处于工作状态或使用中;发生;值班
- up adv.向上;起来;上升;往上prep.向上adj.向上的;上行的n.上升v.上升;增加
- 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。