蝌蚪

He had besides the things before mentioned, twelve marbles, part of a jews-harp, a piece of blue bottle-glass to look through, a spool cannon, a key that wouldn't unlock anything, a fragment of chalk, a glass stopper of a decanter, a tin soldier, a couple of tadpoles, six fire-crackers, a kitten with only one eye, a brass doorknob, a dog-collar -- but no dog -- the handle of a knife, four pieces of orange-peel, and a dilapidated old window sash.

除了以上提到的那些玩意以外，还有十二颗石头子；一只破口琴；一块可以透视的蓝玻璃片；一门线轴做的大炮；一把什么锁也不开的钥匙；一截粉笔；一个大酒瓶塞子；一个锡皮做的小兵；一对蝌蚪；六个鞭炮；一只独眼小猫；一个门上的铜把手；一根拴狗的颈圈――却没有狗――一个刀把；四片桔子皮；还有一个破旧的窗框。

Think of a frog. It has various stages of development: zygote, tadpole and finally adult.

就像青娃，有不同的生长阶段：受精卵时期，蝌蚪时期，最后才是成蛙。

The results shown that:(1) Bufo raddei Strauch tadpole was capable of lens regeneration, which originated from the epithelial cells at dorsal iris margin by depigmentation.(2) Depigmentation of Bufo raddei Strauch during lens regeneration was by two methods: First, pigment granules initially dispersed all over the cytoplasm were moved towards the periphery of the cell, and then were directly taken up by the amoeboid cells. Second, pigment granules in a cell were first crowded in a mass, surrounded by a membranous structure in the cytoplasm, which were eventually discharged as a mass from the cell.

结果表明：花背蟾蜍蝌蚪(1)具有晶状体再生的能力，其晶状体的再生来源于虹膜背缘的上皮细胞；(2)虹膜背缘去色素是转分化的前提，主要有两种方式：一种也是最主要的方式是在晶状体被摘除后虹膜外侧产生巨噬细胞，巨噬细胞吞噬虹膜色素上皮细胞中的色素颗粒；另一种方式是虹膜色素上皮细胞自身释放色素颗粒；(3)电镜观察发现虹膜色素上皮细胞转分化过程中线粒体有明显变化，核糖体增多，粗面内质网增多，晶状体纤维分化过程中细胞核逐渐凝聚。

A very specialized feeding adaptation in zooplankton is that of the tadpolelike appendicularian who lives in a walnut-sizedballoon of mucus equipped with filters that capture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活於核桃大小的黏液球囊内，装备有过滤器，用以捕捉和集中浮游植物。

A very specialized feeding adaptation in zooplankton is that of the tadpolelike appendicularian who lives in a walnut-sized balloon of mucus equipped with filters that capture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活于核桃大小的黏液球囊内，装备有过滤器，用以捕捉和集中浮游植物。

A very specialized feeding adaptation in zooplankton is that of the tadpolelike appendicularian who lives in a walnut-sizedballoon of mucus equipped with filters thatcapture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活于核桃大小的黏液球囊内，装备有过滤器，用以捕捉和集中浮游植物。

A very specialized feeding adaptation in zooplankton is that of the tadpolelike appendicularian who lives in a walnut -sized balloon of mucus equipped with filters that capture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活于核桃大小的黏液球囊内，装备有过滤器，用以捕捉

Nbsp;is that of the tadpolelike appendicularian who lives in a walnut-sized balloon of mucus equipped with filters that capture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活于核桃大小的黏液球囊内，装备有过滤器，用以捕捉和集中浮游植物。

A very specialized feeding adaptation in zooplankton is that of the tadpo lelike appendicularian who lives in a walnut-sized balloon of mucus equipped with filters that capture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活于核桃大小的黏液球囊内，装备有过滤器，用以捕捉和集中浮游植物。

A very specialized feeding adaptation in zooplankton is that of the tadpole like appendicularian who lives in a walnut-sized balloon of mucus equipped with filters that capture and concentrate phytoplankton.

浮游动物体内一种极特殊的进食适应性变化是蝌蚪状的尾海鞘纲动物的那种适应性变化，而尾海鞘纲动物则存活于核桃大小的黏液球囊内，装备有过滤器，用以捕捉和集中浮游植物。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。