雅思阅读辅导：生物防治手段　　阅读段落 　　In the face of the escalating perils from indiscriminate applications of pesticides, a more effective and ecologically sound strategy of biological control, involving the selective use of natural enemies of the pest population, is fast gaining popularity - though, as yet, it is a new field with limited potential.
The advantage of biological control in contrast to other methods is that it provides a relatively low-cost, perpetual control system with a minimum of detrimental side-effects.
When handled by experts, bio-control is safe, non-polluting and self-dispersing.
　　段落大意 　　本段介绍了一种新型更遥、生态更健康的生物防治手段。
　　阅读笔记 　　Strategy of biological control：more effective and ecologically sound 　　Fast gaining popularity new field with limited potential 　　Advantage： low-cost, perpetual control system minimum of detrimental side-effects 　　逻辑关系 　　1.
对比 　　In the face of the escalating perils from indiscriminate applications of pesticides, a more effective and ecologically sound strategy of biological control, involving the selective use of natural enemies of the pest population, is fast gaining popularity.
　　As yet, it is a new field with limited potential.