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。

youdao

It answers the ethical questions raised by using human fetal tissue.

ECONOMIST: Something new in mind

They lie at the heart of our action to support quality education for every child and adult, to examine the ethical questions raised by global developments, to harness the power of science for the common good and to defend the freedoms of information and expression.

UNESCO: DIRECTOR-GENERAL'S MESSAGE FOR THE DAY

Serious ethical and legal questions have been raised in the past.

BBC: William Hague