My wallet was gone. I could only have left it on the G9 bus, which was now speeding in the dark to some unknown station.
我的钱包不见了。我只能把钱包留在 G9 公交车上，如今，那辆公交车正在黑暗中飞速驶向某个未知的车站。
The astronaut can send out a robot which will work on the unknown planet, collecting rocks and minerals, putting up a permanent observation station or traveling far and wide.
宇航员可以派出机器人在这颗陌生的行星上工作，收集岩石和矿物；建立永久性观察站，或向四面八方走动。
It is widely used in channel control surveying to define the coordinates of unknown points by ranging intersection for setting free-station of total station.
利用全站仪自由设站测边交会确定待定点的坐标，在航道控制测量工作中得到较好的应用。
It is widely used in channel control surveying to define the coordinates of unknown points by ranging intersection for setting free-station of total station.
利用全站仪自由设站测边交会确定待定点的坐标，在航道控制测量工作中得到较好的应用。
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