Drones throw up a tangle of ethical questions.

无人机“抛出了”一系列道德上的质疑。

The kids are encouraged to explore ethical questions, too.

夏令营同样鼓励孩子们去探索道德范畴的问题。

At least one expert says such sites pose serious ethical questions.

至少有一位专家说这种网站会造成严重的道德问题。

Here are some important ethical questions relating to the environment.

这一些道德重要问题与我们环境息息相关。

The use of animals in scientific experiments has raised some ethical questions.

用动物做科学实验引起了一些道德问题。