The Tai-Ex opened down 15-poin

The Tai-Ex opened down 15-points this morning from yesterday's close - at
8,210 - on turnover of 1.6-billion N-T.
請問大師,我要如何判斷"8210"指的是昨天還是今天的點數?
請教教我,謝謝!!
1 個解答 1