单词：concentrate on
concentrate on的用法和样例：
例句
- Most have concentrated on shutting them down.大多数人都集中于弄垮爱沙尼亚的网站。
- The research focuses on falling goods prices.研究集中于下降的商品价格。
- You should concentrate on your study.你应该专心于你的学习。
- He can keep his mind on his studies.他能专心于他的学习。
- revolve about 绕 ... 旋转
- focus on集中在
- revolve around围绕 ... 旋转...
- center中心
- center on集中在
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