投诉威胁等级的英文：
Complaint Threat Level

complaint是什么意思：
n. 抱怨；抗议；控告

Viewers jammed the switchboard with complaints.
打电话投诉的观众是总机应接不暇。

I recounted Egyptian complaints.
我重述了一下埃及方面的不满意见。

He was irritated by their perpetual complaints.
他们不断发牢骚把他惹火了。

threat是什么意思：
n. 恐吓；凶兆，预兆；可能造成危险或损害的人或事物

They should not be a threat to reconciliation.
它们不应当威胁和解精神。

His words amounted to a threat.
他的回答等于威胁。

We will not give in to threats or intimidation.
我们决不屈服于威胁或恐吓。

level是什么意思：
n. 水平线，水平面；高度；层；水平；级别
adj. 水平的，同高度的；笔直的；平静的
v. 推平；毁坏；使平等；瞄准；变平；坦率诚实地对待

Level off the shelves with a spirit level.
用酒精水平仪把架子弄平。

But there is plenty of scope at that level.
然而在此水平上还是有足够的余地。

The worker levelled their looks at the foreman.
工人们用目光逼视着工头。