ectolecithal

ecto-le-ci-thal 的音标为/i:kəu/，意思是“外心性的”。速记技巧是注意每个音节的首字母。

Ecto-这个词缀通常用来表示“外部的”或“表面的”。Ecto-lecit-al这个词来源于拉丁语，表示“与细胞膜有关的”。它的变化形式包括-cyt-（来自希腊语词尾，表示“细胞”）和-t-（词干的后缀）。

相关单词：

ectocyst（外皮层）

ectocortex（外皮质）

ectocystitis（外皮层炎症）

ectoparasite（体外寄生虫）

ectoblast（外胚层）

ectoderm（外胚层）

ectodermic（外胚层的）

ectodermal（外胚层的）

ectodinous（外胚层的）

这些单词都与细胞膜和细胞外组织有关。例如，ectocyst指的是组织的外皮层，ectoblast指的是动物和植物体内最初形成细胞的外胚层。这些单词在生物学和医学领域都有广泛的应用。

ectolecithal常用短语：

1. ectolecithal egg：异熟卵

2. ectolecithal follicle：异熟卵卵泡

3. ectolecithal ova：异熟卵子

4. ectolecithal ovum：异熟卵

5. ectolecithal follicle cell：异熟卵卵泡细胞

6. ectolecithal follicular cell：异熟卵卵泡细胞

7. ectolecithal follicular epithelium：异熟卵卵泡上皮

双语例句：

1. The eggs of many animals are ectolecithal.

许多动物的卵都是异熟卵。

2. The ovaries of many birds contain ectolecithal follicles.

许多鸟类的卵巢含有异熟卵卵泡。

3. The eggs of some reptiles are ectolecithal.

一些爬行动物的卵是异熟卵。

4. The eggs of mammals are usually oviparous and ectolecithal.

哺乳动物的卵通常为异熟卵。

5. The eggs of fish are usually ovoviviparous and ectolecithal.

鱼类的卵通常为卵胎生和异熟卵。

6. The eggs of amphibians are usually oviparous and ectolecithal.

两栖动物的卵通常为卵生和异熟卵。

7. The eggs of insects are usually ovoviviparous and ectolecithal.

昆虫的卵通常为卵胎生和异熟卵。

英文小作文：

The Ectolecithal Life of Animals

Many animals lay their eggs in a process called ectolecithal fertilization, which means that the eggs are fertilized outside the body, typically by a male partner releasing sperm into the environment. This process ensures that the eggs are fertilized at the optimal time and are protected from environmental threats until they hatch. This type of fertilization is seen in birds, reptiles, fish, insects, and some amphibians, among others. The eggs laid by these animals are carefully protected by their parents or other members of their species until they hatch, at which point the newly hatched creature is ready to take on the challenges of life in its own habitat. This process is fascinating to observe and study, and it underscores the incredible adaptations that animals have evolved to ensure their survival and reproduction.