At a meeting today, researchers will consider a new world kilogram standard, and other units. John Matson reports.

在今天的一个会议上，研究人员们将考虑一个新的世界通用的千克的标准，当然，还有其他的一些单位。

youdao

Comet Hartley 2 has the same deuterium-to-hydrogen ratio as ocean water, lending support to the idea that Earth's water was delivered by comets. John Matson reports.

哈特利2号彗星拥有和地球海水相同的氘氢比例，有力支持了地球上的水源于彗星(的观点)。来自约翰·马特森的报道。

youdao

But it was her friendliness and warmth that won her the title, John Matson of the Alabama Nursing Home Association said.

阿拉巴马州养老院协会的约翰·马特森称，是她的友善和热情使她夺冠。

youdao