Astronaut William McArthur Jr. and cosmonaut Valery Tokarev, who arrived Oct. 3 for a six-month stay, also prepared for a spacewalk next week.是什么意思_Astronaut William McArthur Jr. and cosmonaut Valery Tokarev, who arrived Oct. 3 for a six-month stay, also prepared for a spacewalk next week.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句