在那里，身高的优势和极好的视力能让它们尽早发现天敌。
They live in lightly wooded bush and grassland in eastern Africa where their height and excellent vision help them to spot predators.
以前在骨头上发现的牙印，大部分不是攻击性天敌留下的猎伤就是食腐动物在其死后撕扯的痕迹。
Tooth marks on bones have been found before, but often as damage left by attacking predators or scavengers that tore at the carcass after the animal died.
她指出蛇是早期灵长类动物的第一天敌，并导致了人类对蛇的相对敏感的视觉系统进化 --这样可以快速的发现蛇类 --这使得我们今天仍可以受益 。
She figures snakes were the first predators of early primates and contributed to the evolution of relatively good vision — useful for spotting snakes — that we enjoy today.
发现不同植被覆盖度内的飞蝗天敌群落和数量有明显的差异。
Significant difference was found in natural enemies community and populations among vegetations with different degree of coverage.
小动物们在海边没有植物可以遮蔽，很容易被天敌发现了吃掉。
Without ocean plants on the seafloor to hide in, small animals are more exposed to the predators that hunt them for food.
当猫发现的时候，它发誓在以后的岁月里老鼠将是它的天敌。
When he found out, the cat vowed to be the rat's natural enemy for ages to come.
生物学家早就知道，是否缺少昆虫天敌是决定一个植物物种是否会变成入侵物种的一个重要因素，但是，现在我们发现，情况比这要复杂得多。
Biologists have long known that the lack of insect enemies is a key factor in determining if a plant species becomes invasive, but we are finding out that the situation is decidedly more complex.
各试验点均未发现大量胭脂虫天敌。
Mass natural enemies were not found in all experimental places.
湖南林业有害生物发生形势严峻，而有害生物天敌产品的研究与开发现状不容乐观。
Forestry pests is a serious problem in Hunan, while the researching and exploiting biological control products are not optimistic now.
而且，很少发现海獭尸体也恰恰说明了天敌捕食假说。
On the other hand, the fact that it's so hard to find dead otters is consistent with the predator hypothesis.
通过对蜘蛛控制害虫的生物量测定，发现低剂量农药能显著的增加天敌对害虫的捕食量。
The result of biomass of pests under spiders showed that the most suitable low-dose chemical pesticide could remarkablely increase the insect-controlling efficiency of paddy field spiders.
专家开始研究海獭数量下降的原因，并且很快发现了两个可能的原因，分别是环境污染和天敌捕食。
Experts started investigating the cause of the decline and quickly realized that there were two possible explanations: environmental pollution or attacks by predators.
专家开始研究海獭数量下降的原因，并且很快发现了两个可能的原因，分别是环境污染和天敌捕食。
Experts started investigating the cause of the decline and quickly realized that there were two possible explanations: environmental pollution or attacks by predators.
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