The boss turned to me and asked in a threating tone.

老板转过身子，以威胁的口吻问我。

And even threating something like that is the height of irresponsibility.

我们不能赖账，就连以此作为威胁都是不负责任之尤。

He has to resort to threating of court action to get repayment of the money owing.

他不得不求助于诉讼威胁获得所欠款项的付还。

Background and objective Lung cancer is the most dangerous threating tumor to human's health and life.

背景与目的肺癌是对人类健康和生命危害最大的恶性肿瘤。

It was extremely distressing to frequently receive emails from the owners of ext, LLC threating to Sue me if I didn't play along with their plans.

让人伤神的是我常常会收到来自Ext, LLC的email，威胁如果我不参与他们的计划就要起诉我。