In the lower orbit, scientists will be able to distinguish surface objects as small as 3 feet (1 meter) wide, McEwen said.是什么意思_In the lower orbit, scientists will be able to distinguish surface objects as small as 3 feet (1 meter) wide, McEwen said.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句