cacogenics

英式音标：[ˌkækə'dʒenɪks]

美式音标：[ˌkækə'dʒenɪks]

词汇分类：大学医学英语词汇

词义：

n.

劣生学（研究杂交造成的种系退化现象等）；

英英释义

cacogenics

n.the study of the operation of factors causing degeneration in the type of offspring produced

同义词：dysgenics

用法：

权威例句

The nam family : a study in cacogenics

EUGENICS vs. CACOGENICS: An Ethical Question of Importance to the Movement—Attention Should Be Centered on Factors of Absolute Valu...

The Nam family; a study in cacogenics, by Arthur H. Estabrook ... and Charles B. Davenport ... With four charts and four text figures.

Human Inheritance

Eugenic Sterilization in the United States

Modernist Versions of Pastoral: Poetic Inspiration, Scientific Expertise, and the “Degenerate” Farmer

Dysgenics

Dysgenics

Dysgenics

Dysgenics

造句：

1. The seagulls swirled in aerial combat over the barges.

海鸥盘旋在驳船上方，展开空中的搏斗。

来自柯林斯例句

2. a flock of seagulls

一群海鸥

来自《权威词典》

3. Seagulls followed in the wake of the huge ship.

海鸥尾随于大船之后.

来自《简明英汉词典》

4. The seagulls were wheeling in the air above the ship.

海鸥正在船上面盘旋.

来自《现代汉英综合大词典》

5. There is a seagull perched atop the mast.

有一只海鸥停歇在桅杆上.

来自《简明英汉词典》

[ retroactive 造句 ]