1. Don´t try to threaten me. I won´t compromise with you.
    不要威胁我,我不会和你妥协的.

2. Some parents threaten to punish for bad grades or offer rewards for good marks.
    许多家长吓唬孩子，说如果考不好就要惩罚他，或是向孩子许诺，说考得好就给奖励。

3. Cloning is a radical challenge to the most fundamental laws of biology, so it's reasonable to be concerned that it might be a preface to activities that will threaten human society and dignity.
    克隆向生物学最基本的规律发起了一次革命性的挑战，因此有理由担心这或许是威胁人类社会和人类尊严的活动的序曲。