n. 白痴 a. 自然的, 自然界的, 本能的, 天然的, 物质的, 正常的, 原始的, 自然数的
In fact, organic farmers often use larger quantities of pesticide because they can only use the natural variety of insect-killers.
四级 · CET-4 2026年6月 第1套
Chemical pesticides generally kill a much wider range of pests (害虫) than any single natural pesticide.
四级 · CET-4 2026年6月 第1套
Earth Day is an annual celebration that honors the achievements of the environmental movement and raises awareness of the need to protect Earth’s natural resources for future generations.
四级 · CET-4 2025年12月 第3套
Environmentalists have long believed that building roads or homes near the bears may threaten their survival by “reducing or fragmenting their natural habitats”, The Times reported.
四级 · CET-4 2025年6月 第1套
With those born with natural talents, it feels as if they excel without really trying.
四级 · CET-4 2025年6月 第1套