The modern history of oil started in the middle of the eighteen hundreds.

石油的现代史开始于18世纪中叶。

Close to five million barrels of oil were released into the Gulf until the leak was contained in the middle of July.

接近500亿桶石油被释放到海湾，直到泄漏是在七月中旬中。

In the middle of it, a pan full of oil sizzled over a smoky fire, sending out a repelling odor of tallow that took away one's breath.

山洞当中有一只大油锅在烟火上嘶嘶作响，发出一股叫人没法呼吸的牛脂气味。