For the chemistry of life to be remotely detected, we must find a planet where photosynthesis is is being conducted by surface organisms.
对于需要远距离探测的生命化学,我们必须要找到一个通过表面生物进行光合作用的星球。
Because of the way light reflects off the organisms, these phytoplankton create colourful patterns at the ocean surface.
由于光在这些浮游生物身上产生反射,它们在海洋表面形成了五颜六色的图案。
Algae range in size from single-celled organisms to giant kelp plants. Some live near the surface of the ocean, and these algae need nitrogen to grow.
海藻包括小到单细胞有机体、大到巨型褐藻的多种类型植物,有些海藻生长于海面附近,依赖氮元素成长。
The plant-like organisms in plankton, known as phytoplankton, are found close to the surface of the water where there is sufficient light to allow photosynthesis.
人们在光线充足、能够产生光合作用、靠近水面的地方,发现了浮游生物中植物似的生物体——浮游植物。
When microscopic Marine organisms known as phytoplankton multiply into a dense population at the ocean's surface, massive blooms can spread so far that they can only be seen from space.
当微小的海洋浮游生物在海洋表面大量繁殖时,其壮观的场面甚至能从太空观察到。
That can be used as a proxy for phytoplankton population in a given area, since the tiny organisms live close to the ocean's surface, where they are exposed to sunlight they use to produce energy.
海水的清晰度可被用作衡量在特定水域的浮游植物数量的指标,因为这些微生物生活在海洋表面,在那里它们可以得到它们用之产生能量的阳光。
Third some kind of strange surface chemistry, rather than living organisms, could be eating up the hydrogen.
第三,某种奇怪的表面化学物,而不是生物体,把氢气消耗光了。
The churning water drags surface-dwelling phytoplankton into deeper waters, distributing the organisms throughout the water.
海水搅动将栖息于表面的浮游植物拖入更深的水域,使得微生物完全分布于水中。
The findings could mean that is evidence of living organisms on Mars around 4 billion years ago buried on the planet's surface.
该发现意味着约40亿年前生活在火星上的有机生命体可能掩埋在该星球表面之下。
But on Mars they would be living underground because the radiation - or light and heat - from the Sun would kill any organisms living on the surface of the planet.
但是在火星上也许它们要生活在地下,因为太阳辐射,或者说太阳的光和热会杀死火星表面所有的生物体。
When lily pads cover up the whole surface of a pond all fish and other organisms living underneath will suffocate to death.
当睡莲叶子将整个池子表面盖满时,生长在下面的所有鱼类将因窒息而死去。
Indeed, there is loose talk of life having originated more than once in the distant past, and of there being entire shadow biospheres of organisms completely unrelated to anything on the surface.
实际上,关于在遥远的过去生命起源不止一次,以及完全与地表任何东西无关联的少量有机体生物圈的存在,这都是胡说八道。
Many overwintering organisms produce antifreeze proteins that can be adsorbed onto the surface of ice crystals and modify their growth.
很多越冬的生物会产生抗冻蛋白,这些抗冻蛋白能够吸附到冰晶的表面改变冰晶形态并抑制冰晶的生长。
Many overwintering organisms produce antifreeze proteins (AFPs) that can be adsorbed onto the surface of ice crystals and modify their growth.
很多越冬的生物会产生抗冻蛋白,这些抗冻蛋白能够吸附到冰晶的表面改变冰晶形态并抑制冰晶的生长。
Minute organisms that float or drift passively near the surface of oceans and seas.
洋面和海面附近的浮动或被动漂浮的微小生物。
Nematode and unidentified organisms were seen on the slide from maize root exudates, while similar organisms were found on maize root surface.
玉米根系分泌物中分布有线虫和生物体,根系表面分布有生物体,其形态与根系分泌物中生物体形态相似。
Immunotherapy is based on the processes of the nature of the tree, whose role is to show the surface of infected organisms to the special protein, so it can change the remainder of the immune system.
该免疫疗法是基于树突起细胞的性质,其作用是呈现受感染生物体表面的特殊蛋白质,因此它可以改变剩余的免疫系统。
While organisms at the ocean surface evolve fairly rapidly, soil microbes only change slowly throughout evolution, perhaps partly due to long dormancy phases during winter.
生活在海洋表面的生物体进化得相对较快,而土壤中的微生物进化较慢,部分原因归咎于冬季漫长的休眠期。
The rusticles -porous, dark orange, icicle-like structures that form on rusting iron -covered the metal surface of Titanic and are home to a host of micro-organisms.
它们覆盖在泰坦尼克号的金属表面,成为各种微生物的家园。
If surface-active substances are used for sample preparation, their absence of toxicity for micro-organisms and their compatibility with inactivators used must be demonstrated.
如果在供试品的制备过程中使用了表面活性剂,必须证明其不会对微生物产生毒性并且可与 灭活剂兼容。
The organisms from crop root exudates were collected directly by putting slide onto root surface and observed the organisms on the slide and root surface by fluorescence microscope.
利用改进根箱法对玉米和花生根际生物进行了原位采样和观察。采用载玻片贴片方法直接采集到作物根系分泌物中的生物,并用荧光显微镜进行观察。
Travel damage occurs when surface vegetation or communities of organisms are trampled beyond recovery.
当植被或生物群落被过分践踏而不能恢复,行进将导致的伤害。
S-layer (surface layer) has been identified as the outermost structure of cellular envelopes in numerous organisms from bacteria and archaea domains.
在一些古细菌和真细菌中,表层蛋白是细胞膜最外层的结构。
S-layer (surface layer) has been identified as the outermost structure of cellular envelopes in numerous organisms from bacteria and archaea domains.
在一些古细菌和真细菌中,表层蛋白是细胞膜最外层的结构。
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