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"Fair trade is now to be called Fool Trade if it is not Reciprocal," Trump tweeted on Monday after abruptly withdrawing support for a joint declaration on free trade signed at the Group of Seven summit over the weekend in Canada.

"Due to increasing traffic in the city, it's difficult to reach accident scenes fast, so we decided to start the motorbike service team to solve the problem," said Tian Pengfei, director of the road rescue team.

"Face coverings are one of several public health measures recommended by the Centers for Disease Control and Prevention as an important layer of protection for passengers and customer-facing employees."

"Developing hydrogen fuel cell vehicles strongly relies on core technologies and supporting infrastructure, so it will take China at least 10 to 20 years to completely realize the industrialization and commercialization of hydrogen fuel cell automobiles," said Zhang from Automotive Foresight.

"Despite the fact that most of the gas reserves are located 3,500 meters beneath the seabed, which makes it challenging to find gas reserves, technical research and studies in recent years have laid a solid foundation and made exploitation possible," said Xue.