Apart from any moral considerations this is a stupid method of training, for it produces a resentful animal who at a later stage may well turn man-killer.

撇开道义方面的考虑，这种调驯法是愚蠢的，因为这种方法会使大象“怀恨在心”，在以后某个阶段它很可能变成伤人的动物。

youdao

First, could it turn into a global killer?

首先，病毒是否会变成全球性的？

youdao

Three big questions need answering. First, could it turn into a global killer?

现在，有三大问题亟待解决：第一，这次会演变为全球性灾难吗？

youdao

Such novel proteins may also hold the key to explaining Vibrio cholerae's great mystery: how a free-floating marine microorganism can turn into such a killer.

ECONOMIST: The cholera genome

Perhaps the "killer app" for improving learning may turn out to be the lowly database.

FORBES: Instant feedback in the classroom

When risk managers, compliance officers and hospital attorneys turn a blind eye to a serial killer to protect their institutions, they don't go to prison.

CNN: Bring medical misdeeds into the light