They have spent $3 million building fences around the National Park to exclude such pests.
为了阻止这类有害动物进入,他们已经耗资300万美元在国家公园周边建造围栏。
《柯林斯高阶英汉双解学习词典》
In the short term, chemical sprays are clearly an effective way to control pests.
从短期来看,喷洒化学药品显然能有效控制虫害。
《柯林斯高阶英汉双解学习词典》
树冠整齐,枝叶繁茂,容易栽培,病虫害少,花果鲜美可爱,因而也是田旁、宅园绿化的良好观赏树种。
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