Both native and exotic species can become invasive, and so they all have to be monitored and controlled when they begin to get out of hand.
本土物种和外来物种都有可能成为入侵物种，因此当它们开始失控时，我们必须对它们进行监视和控制。
When importing a lot of exotic species, we should not forget to conserve local breed resources.
在大量引进外种的情况下，应当不忘记把地方的品种资源保存好。
She was English, which in those days — we are speaking of half a century ago — made her an exotic species in our little Irish seaside town.
她是英国人，在那时--半个世纪以前，她成为我们这个爱尔兰海滨小镇的“外星人”。
Madagascar, which has been isolated from landmasses for more than 160m years, is the world's fourth largest island and a "conservation hotspot" with thousands of exotic species found only here.
马达加斯加脱离大陆已超过1.6亿年，是世界第四大岛屿，也是一个拥有数千种特有奇异物种的“热点保护地区”。
According to the facts that we know, (1) D. simulans is an exotic species;
根据了解到的事实，（1）拟果蝇在中国是一个外来种；
The exotic species has caused problems for the shrimping industry in other parts of the world.
这些外来物种给世界其他地方的虾业带来困扰。
The effects of exotic species to ecosystems are mainly on the productivity, soil, water, disturbance, community structure and dynamics.
植物外来种对生态系统的影响主要体现在生产力、土壤营养、水分、干扰体制、群落的结构和动态等方面。
Objective to describe the invasion of exotic species into the composition of fly fauna in China and the significance of human-induced invasion of fly vectors.
目的说明我国媒介蝇类区系成分中外来种的入侵问题及人类活动导致的媒介蝇类入侵的重要性。
As to garden plants, exotic species on the same latitude are also gradually introduced and used in clever mix with local varieties to create new plant landscape space.
在园林植物方面也逐步引用一些同一纬度上的外来品种，与本土品种进行巧妙搭配，构筑新颖的植物景观空间。
The ecological function of plantations can be improved by using a combination of fast growing exotic species and bird dispersed native species so as to accelerate succession.
在营造速生人工林时，适当引入鸟播的野生树种，可加速人工林的自然演替速度和提高人工林的生态效益。
Other Exotic species have been introduced for landscape restoration, biological pest control, sport, pets, and food processing.
其他外来生物是为了恢复环境、害虫生物防治、体育、宠物、食物加工等目的而引进的。
Other Exotic species have been introduced for landscape restoration, biological pest control, sport, pets, and food processing.
其他外来生物是为了恢复环境、害虫生物防治、体育、宠物、食物加工等目的而引进的。
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