By contrast, the blue-chip Hang Seng index jumped 323.74 points, or 1.6 per cent, to 20,430.16.是什么意思_By contrast, the blue-chip Hang Seng index jumped 323.74 points, or 1.6 per cent, to 20,430.16.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句