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The avian activity also changes the chemical flavorof the trees by boosting terpenes—chemicals found to repel tree-eating pests such as bark beetles as well as porcupines and squirrels.
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鸟类活动还会刺激树木产生松烯，改变树木的化学「味道」──这种化学物质已知可以驱除啃食树木的害虫，如树皮小蠹，以及豪猪、松鼠等。 |
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The avian fauna are composed of 68 Palaearctic realm species (41.21%), 90 Oriental realm species (54.54%) and 7 Eurytopic species (4.24%).
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从地理型分析，东洋界种有90种(54.54%)，古北界种68种(41.21%)，广布种7种(42.24%)。 |
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The avian tarsometatarsus distinguished from the tarsus and metatarsus of other quadruped by its unique characteristic of structure.
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摘要鸟类的跗跖骨以其独特的结构特征与其他四足动物跗骨、跗骨相区别。 |
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The aviation adventurer broke records for circling a globe alone in a balloon.
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他曾打破独自乘坐热气球环游地球的记录。 |
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The aviation materials, such as superalloys (mainly cobalt-base alloys), titanium-base alloys, stainless steels, ceramics, highly abrasionproof nonmetals, have become excellent clinical materials because of their premium properties of light mass, high str
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航空材料中的高温合金（主要是钴合金）、钛合金、不锈钢、陶瓷、高耐磨非金属等材料以其轻质、高强、高抗疲劳性、高耐热、高可靠性，并且具有良好的生物相容性等优良性能，已成为临床中较为理想的植入材料，并被广泛应用于外科植入物方面。 |
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The aviation units can provide fire support for the ground forces.
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陆航部队能够向地面部队提供火力支援。 |
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The aviator pilots his airplane.
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那位飞行员驾驶他的飞机。 |
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The aviator warped a wing tip to regain balance.
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那飞行员使一翼端翘起，以恢复飞机之平衡。 |
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The avionics on this spacecraft represent a new generation of sophistication.
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这架航天飞机上的电子设备代表了新一代的复杂水平 |
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The avoidance of the incidence of knock and backfire is the most important considerations in H2 spark ignition engines.
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目前，氢作为发动机燃料的研究已经获得一定成果。 |
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The avowed aim of this government is to reduce taxation.
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这届政府所宣称的目标是减少税收。 |
