节育的英文：
birth control
It's a contraceptive method in which coitus is initiated but the penis is deliberately withdrawn before ejaculation.
这是一种在性交中射精前阴茎有意抽出的节育方法。
Use barrier types of birth control: condoms or a diaphragm.
使用屏障模式的节育方式：避孕套或者子宫帽。
The sperm protein used in the new birth control vaccine is called Ph-20. So far it has only been found in guinea pigs.
在新节育疫苗中使用的精子蛋白叫PH．20。到目前为止仅见于豚鼠。
n. 出生；血统，出身；起源
Being authentically or genuinely such by birth.
纯种的出身纯正或血统纯净的
To give birth to(a calf).
生下（小牛崽）
There is a royal proclamation of the birth of the prince
那有一张王室的公告，宣告王子诞生了。
He is of humble birth.
他出身卑微。
He is a man of low birth.
他出身低微。
v. 控制，管理；抑制；限制
n. 管理权；控制；管理；操纵装置
control experiment
ph.1. 核对实验(实证某一变数单独对整个系统可能发生的影响)
controlled dictation
听写测验
control footing
控制合计
pulling controller
单晶拉制电子控制器
controlled drug
ph.1. 受法律管制的药物(或毒品)