sudden rise and sudden fall

基本解释

The stock exchange is ready to collapse but its demise will be sudden after a period of fall and rise.
証券交易就要崩潰，但它的死亡將在一段時期的漲漲跌跌後突然墜落。
pengqiang7612.blog.sohu.com
Another risk is that a sudden rise in interest rates would trigger a fall in share prices (though if higher rates did boost spending, and hence profits, share prices should eventually gain).
還有一個風險是，利率的上陞可能觸發股價的下落（盡琯更高的利率的確促進消費，從而獲利，但是股價最終應得到增進）。
Financial breakfast research team believed that the main reason for the sudden rise of black futures is the combination of stock resupply by end of the year and the recent fall of some varieties.
財經早餐研究室認爲，年底補庫存曡加部分品種近期跌幅較大是黑色系暴漲的主要原因。