But since the 1950s, logging has fragmented the Qinling Mountain forests.
重点讲解:
1. be subjected to
使经受;使遭受;
eg. Those who break the law are subjected to justice.
违法者要受到法律制裁。
eg. With the increasingly cold weather, the passengers will be subjected to greater suffering.
随着天气越来越冷,这些旅客将承受更大痛苦。
2. not only...but (also)
不仅……而且;
eg. Not only are housewives not paid, but also most of their boring work is unnoticed.
家庭主妇不仅得不到报酬,而且她们单调的工作大多数不会被人注意、
eg. The moves in chess are not only manifold, but involute.
下棋的走法不但多种多样,而且错综复杂。