aplacental

英式音标：[æpleɪ'sentl]

美式音标：[æpleɪ'sentl]

词义：

adj.

（低等哺乳动物）无胎盘的（如袋鼠）；

英英释义

aplacental[ ,eiplə'sentəl ]

adj.having no placenta

"monotremes and marsupials are aplacental mammals"

用法：

权威例句

A new class of DNA photolyases present in various organisms including aplacental mammals.

Morphological and endocrine correlates of the reproductive cycle of the aplacental viviparous dogfish, Squalus acanthias.

Ovarian structural specializations facilitate aplacental matrotrophy in Jenynsia lineata (cyprinodontiformes, osteichthyes)

Mother-embryo isotope (δ¹⁵N, δ¹³C) fractionation and mercury (Hg) transfer in aplacental deep-sea sharks

THE INTERRUPTION OF PREGNANCY BY OVARIECTOMY IN THE APLACENTAL OPOSSUM: A STUDY IN THE PHYSIOLOGY OF IMPLANTATION

Early Death of the Mammalian Ovum with Special Reference to the Aplacental Opossum

Altered Growth Following Gestational Viral Infection of the Placental and Aplacental Host

BRIEF COMMUNICATION Mother–embryo isotope (

同义词：implacental

造句：

1. Now there is a dawning realisation that drastic action is necessary.

现在人们开始意识到必须采取断然的行动。

来自柯林斯例句

2. There are going to have to be some drastic changes.

一定得进行重大变革。

来自柯林斯例句

3. Linda knew that for both their sakes she must take drastic action.

琳达知道，为了他俩，她必须断然行事。

来自柯林斯例句

4. The situation brings home to us the need for drastic preventive measures.

这种情况使我们深切地感到,采取坚决的预防措施是必要的.

来自《简明英汉词典》

5. The situation brings home to us the need for drastic preventive actions.

这种情况使我们深切地感到采取极端的行动是必要的.

来自《简明英汉词典》

[ drastic 造句 ]