B2 to change suddenly or completely, especially from one thing to another, or to exchange by replaciB2 to change suddenly or completely, especially from one thing to another, or to exchange by replaci
She started studying English, but switched to History in her second year.
B2 to change suddenly or completely, especially from one thing to another, or to exchange by replaciB2 to change suddenly or completely, especially from one thing to another, or to exchange by replaci
突然改变，彻底改变;调换;转换 She started studying English, but switched to History in her second year.
Mr.Wells made a fortune on the stock exchange by selling short.Mr.Wells made a fortune on the stock exchange by selling short.
威尔斯先生在证券交易所通过卖空发了笔横财。
