Intrusion into natural areas by port expansion and maintenance can pose serious threats to wildlife and sensitive species and habitats.
闯入自然生态区域进行港口扩建和维护，均会对野生动物和敏感类生物以及植物生态环境造成严重的威胁。
It basically means that even developed landscapes can contribute to the overall ability of a region to support sensitive species that lived there before development occurred.
它的基本含义是，景观即便被开发了，也仍然能够提高某一地区保护开发前曾在此地出现过的敏感物种的整体能力。
In all 17 species, the commonest kind of light receptors were "rod" cells, which are highly sensitive to light and allow night vision but cannot tell colors apart, they found.
在所有17种鲨鱼中，最常见的感光细胞是“杆状”细胞，这种细胞对光线非常敏感，可以使鲨鱼具有夜视能力，但这种细胞无法分辨颜色。
They are told how sensitive each species is to pollution, and asked to work out from this how polluted the pond is.
他告诉孩子们每一种昆虫对污染的敏感性，并要求他们据此推算出池塘的污染程度。
And because different bacterial species are sensitive to different pollutants, different coloured glows can indicate the presence of specific chemicals.
由于不同细菌对不同污染的敏感程度不同，因此，不同颜色的荧光可以用来显示特定的化学物质。
Dr Widder is working with a bioluminescent bacterium species called Vibrio fischeri that is sensitive to a wide variety of pollutants.
威德博士目前在研究一种叫做Vibriofischeri的荧光细菌，这各细菌对于各种污染非常敏感。
The scientists, who examined retinas of 17 different species of shark, discovered that the creatures had only one type of colour-sensitive cell, known as a cone cell, in their eyes.
科学家通过调查了17个不同种类的鲨鱼后发现这种生物眼睛内只具有一种感色细胞，称为“视锥细胞”。
The outbreaks of these indigenous species occurred in conjunction with the introduction of sensitive exotic tree species species and ill-advised expansion over large areas.
这些重要林业害虫在我国的发生都是伴随着敏感外来树种的引进和大量不合理的种植而逐渐严重起来的。
The octopus species has sensitive chemoreceptors on its tentacles, which can taste food and "smell" water.
章鱼的触手上有很敏感的化学感应器，能够品尝食物，并且“闻到”水的味道。
They suggest that sensitive whiskers are of huge benefit to the species, allowing them to hunt fish with the highest calorific reward.
他们认为敏感的胡须对这些海豹非常重要，让它们捕鱼时得到了最大的回报。
A seeding late in the fall season may not be recommended as certain species of natives are frost sensitive.
由于有些天然牧草对霜比较敏感，所以在深秋季节播种是不予推荐的。
Screening of plasma samples from various species indicated that swine and humans are sensitive to the effects of OSCS in a similar manner.
在各种物种中筛选血浆标本，发现猪与人对OSCS有同样的敏感的反应模式。
In fire-sensitive ecosystems, uncontrolled burning often encourages the spread of alien invasive species.
在火敏感型生态系统中，通常火灾失控燃烧有利于外来入侵物种的扩散。
Bird and fish die-off from methane have shown these species are highly sensitive to methane poisoning.
鸟类和鱼类由于甲烷导致的大量死亡显示了这些物种对甲烷毒气的高度敏感。
Methods Pathogenic bacteria species were determined and drug sensitive tests were conducted for 31 lung cancer patients who have got infection in lower respiratory tract after chemotherapy.
方法对31例确诊为肺癌并且出现化疗后下呼吸道感染患者，进行致病菌和药物敏感性分析。
CONCLUSION The results showed that this method is sensitive, simple, specific and accurate for the determination of homoarbutin in Pyrola of different species and the control of quality of Pyrola .
结论本法灵敏、简便、准确，可用于鹿衔草的含量测定和质量控制。
This method was sensitive, rapid and convenient in the early recognition of Candida species.
该方法灵敏、快速、简便，有助于对念珠菌种的及早确认。
Porcine oocytes are sensitive to lower temperature due to rich lipid droplets in their ooplasm. The research can also provide a reference for such species.
由于猪卵母细胞中含有丰富的脂滴，对低温非常敏感，对它的研究也可为其它低温敏感性物种的卵母细胞冷冻保存提供参考。
The abrupt changes in spore-pollen species and in the content of reduction sulfur are sensitive to water depth, and can be used as indicators for sequence boundaries and system tracts.
孢粉种属突变以及还原硫含量变化对水体深度比较敏感，是划分深水环境层序边界以及体系域的良好指标。
1 species: sensitive fern; in some classifications included in Polypodiaceae.
一个种；球子蕨；在一些分类中，包括在水龙骨科内。
1 species: sensitive fern; in some classifications included in Polypodiaceae.
一个种；球子蕨；在一些分类中，包括在水龙骨科内。
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