Question

sac n.囊；液囊 (1) 腹膜腔是一个封闭的囊腔。(2) 卵黄囊逐渐被血管化了。(3) 这些异常可能最终导致多种结构异常成熟胚囊的形成。 You might put your groceries in a sack, but without the “k” a sac is smaller and attached to a plant or animal. Human fetuses grow inside an amniotic sac, and seed plants produce pollen inside sacs as well. Since the mid-1700s, sac has been used to mean "biological pocket," from the Latin root word saccus, or "bag." If you’re not sure which sac to use, it’s almost always the other one unless you’re in biology class.

Accepted Answer

英 [sæk] 美 [sæk] (1) The peritoneal cavity is a closed sac.(2) The yolk sac is gradually vascularized.(3) These abnormalities would cause the abnormal structure of mature embryo sac. A sac is a hollow space or container. While any pocket or pouch can be called a sac, the word usually refers to a small enclosed space that occurs in nature, like a spider's egg sac or a squid's ink sac. 1[N-COUNT 可数名词](动物体内的)囊，液囊，气囊 A sac is a small part of an animal's body, shaped like a little bag. It contains air, liquid, or some other substance. The lungs consist of millions of tiny air sacs.肺由数百万个小气囊组成。

英语单词	sac
英美音标	英 [sæk] 美 [sæk]
中文释义	n.囊；液囊
英语例句	(1) The peritoneal cavity is a closed sac. (2) The yolk sac is gradually vascularized. (3) These abnormalities would cause the abnormal structure of mature embryo sac.
中文例句	(1) 腹膜腔是一个封闭的囊腔。 (2) 卵黄囊逐渐被血管化了。 (3) 这些异常可能最终导致多种结构异常成熟胚囊的形成。
vocabulary简明	A sac is a hollow space or container. While any pocket or pouch can be called a sac, the word usually refers to a small enclosed space that occurs in nature, like a spider's egg sac or a squid's ink sac.
vocabulary扩展	You might put your groceries in a sack, but without the “k” a sac is smaller and attached to a plant or animal. Human fetuses grow inside an amniotic sac, and seed plants produce pollen inside sacs as well. Since the mid-1700s, sac has been used to mean "biological pocket," from the Latin root word saccus, or "bag." If you’re not sure which sac to use, it’s almost always the other one unless you’re in biology class.
柯林斯解释	1 [N-COUNT 可数名词](动物体内的)囊，液囊，气囊 A sac is a small part of an animal's body, shaped like a little bag. It contains air, liquid, or some other substance. The lungs consist of millions of tiny air sacs. 肺由数百万个小气囊组成。

Sac Space Word Small Inside You’re 英 Sæk] 美