Insect problems arose with the intensification of agriculture-the devotion of immense acreage to a single crop.

农业生产高度集中，大量土地被用来种某一种庄稼，昆虫问题也就接踵而至。

So removing grazing animals entirely would leave unfarmable acreage four times the size of California.

因此，完全移除放牧动物将留下四倍于加利福尼亚面积不可耕种面积。

Grain acreage will be kept stable, per unit crop yield will be increased, and the quality of grains will be raised.

稳定粮食播种面积，提高单产和品质。

This year is already the most destructive wildfire season, in terms of acreage affected, in state history.

就受影响面积而言， 今年已经是该州历史上最具破野火季节。

They lived contentedly with their daughter on an acreage until he was found lifeless, pinned under a tractor.

他们和一块土地上心满意足地生活着，直到他被发现被压拖拉机下，已经没有生命迹象。

And one of the few avenues that's open to them is just going out and buying up another company that does still have good acreage.

对他们开放为数不多途径之一就是出去收购另一家仍然拥有大片土地公司。

OK, we know about the wildfires that happen out West, and the average acreage burned in warm season has nearly doubled.

好， 我们知道西部地区发生野火，温暖季节平均烧毁面积几乎增加了一倍。

The U.S. burns twice as many acres as it did three decades ago and Forest Service scientists believe the acreage burn may double again by mid-century.

美国土地烧毁面积是30年前2倍，林务局科学家们相信，到本世纪中期，烧毁面积还将增加1倍。

As his slaves increased in number, he was forced to increase his acreage or sell them, and he usually preferred the former, especially in the Far South.

随着他奴隶数量增加，他被迫扩大种植面积或出售他们， 而他通常更喜欢前者， 尤其是远南地区。

That's only a small share of the total acreage that could benefit, about half a million acres in all, so it will be vital to prioritize areas at greatest risk of fire or drought.

受益也只是少部分林地，大约五十万英亩规模。因此优先处理火灾或干旱威胁最大区域非常重要。

The central feature of the middle distance, as they beheld it, was a circular isolated hill, of no great elevation, which placed itself in strong chromatic contrast with a wide acreage of surrounding arable by being covered with fir-trees.

他们看来， 中距离中心特征是一座圆形孤立山丘， 海拔不高，与周围大片耕地形成了强烈对比， 被冷杉树覆盖。