Question

受験生

allow certain animals throughというのは構造的にどうなっていますか？

wildlife tourism, which is valuable to Botswana's economy.
The negative ecological effects of fences can be limited by
making changes to them to allow certain animals through./Nevertheless,
the study's authors believe a more fundamental change is necessary.
Eliminating all fences, they say, is not a realistic option; instead,
eve on the big picture./
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