威胁等级的英文：
threat level

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。

The confederacy considered him a threat.
联邦政府认为他是一个威胁。

Such threats could scuttle the peace conference.
这种威胁会阻挠和平会议。

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。

They leveled a field yesterday.
他们昨天平整场地了。

They leveled a building with the ground.
他们拆除了一座建筑物。