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"Dogs can hear high-frequency sounds that humans can't. By using such sounds, police can give the animals orders in situations in which they don't want to be heard, or from long distances," said Xu, a trainer at a police dog training base in suburban Beijing that is home to about 270 dogs.
"Do you know how cold -20 C is? Even machines cannot bear such cold. The computers cannot be turned on," said Chen Gang, an employee from China Mobile's Tibet autonomous region branch.
"Despite the fact that ivory has been appreciated by the Chinese since the Shang Dynasty more than 3,000 years ago, and rhino horn items since the Ming Dynasty (1368-1644), prices were never ramped up in the domestic market," Ma says.
"Ecological protection and the scientific use of natural resources are both important. We will further promote the green industry in Jilin and achieve harmonious development between people and nature," Bayanqolu said.
"Everyone has shining business ideas, but it remains a challenge to match genius ideas with end-users' practical needs. It's a cherished procedure for you to design and revise again and again in accordance with end-users' requirements."
