1. This is a conservative estimate of the population in the year 2000.
    这是对公元二○○○年时人口的保守估计。

2. Useless, powerless, complaining, sick, weak, conservative, rigid, helpless, unproductive, wrinkled, ugly, unattractive, and on and on.
    无用，无能，爱抱怨，多病，体弱，保守，僵化，无助，成不了事，满脸皱纹，丑陋不堪，魅力无存，等等，等等。

3. Conservative spiritual leaders have claimed that cloning a human constitutes a gross attack on human dignity.
    保守派的宗教领袖宣称，克隆人类是对人类尊严的一次重大挑战。

4. Old people are usually more conservative than young people.
    老年人通常比年轻人保守.