打开心扉，放飞思想！
We usually open at 8 o 'clock in the morning.
我们通常是在早上8点开始营业。
Sure, Sir. We open at nine o 'clock sharp in the morning.
当然有，先生。我们早上九时正开始营业。
The shops usually open at nine o' clock.
商店一般在九点钟开始营业。
The dimensional synthesis problem of Open Kinematic Chain(O. K. C)is studied.
本文研究了机器人开式链机构尺度的综合问题。
The dimensional synthesis problem of Open Kinematic Chain(O. K. C)is studied.
本文研究了机器人开式链机构尺度的综合问题。
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