SOHO came in handy last fall when it caught two large CMEs headed for the earth, but it could not follow the ejecta nor provide an accurate impact time.是什么意思_SOHO came in handy last fall when it caught two large CMEs headed for the earth, but it could not follow the ejecta nor provide an accurate impact time.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句