A dentist may decide to extract the tooth to prevent recurrent trouble.牙医可能会决定拔掉那颗牙，以免反复发作。This type of surgery could even be used to extract cancerous growths.这种外科手术甚至可以用来切除癌性肿瘤。Blend in the lemon extract, lemon peel an...
After the impounding of Yantan Hydropower Station , serious, water log occurred in some districts reservoir.岩滩水电站水库蓄水后, 库边一些地段发生了较严重的内涝问题, 淹没了部分农田,造成了一定的经济损失....