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[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon
Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol
The One With Ross' New Girlfriend 本集简介: Rachel, ready to reveal her feelings to Ross, meets him at the airport; her plans fall apart, however, when she finds out about his new girlfriend, Julie. Chandler, already feeling guilty about reveali
The One With Ross's Wedding 本集简介: Ross, Monica, Joey, and Chandler leave for London; Phoebe's pregancy prohibits travel and Rachel stays to take care of her... and to avoid the emotional strain of watching Ross get married. Joey and Chandler
The One With Ross's Thing 本集简介: Ross finds a growth on his body but can't tell what it is; neither can anyone else. He visits his doctor, Chandler's doctor, and Phoebe's guru. Phoebe dates two guys: Vince, a burly fireman, and Jason, a sensi