Which will burn longer,the candle in the old days or the one

Which will burn longer,the candle in the old days or the one in the old days "To burn the candle at both burn the candle with both sides If he or she blows out all the candle in one go, the wish wi 看英文猜成语..(1)burn a candle to lengthen the day(2)will not have which flat is more explensive.the old one or the new one? which library is bigger,the new one or the old one? Which candle burns longer:a black one or a white one? which candle burns longer:a black one or a white one Which is longer?The Yangtze River or The Yellow River? turn the heat down or your cake will burn 翻译