Using a vulnerability index and reviewing risks from deliberate and random attack the effectiveness of the sorting methods is then evaluated.

则节点移除后网络的破坏程度可以用最大连通子图的相对大小，全局效率以及脆弱性指标来进行评价。

youdao

Whether the stampede was a tragic accident or the result of a deliberate attack may never be known for sure.

ECONOMIST: An Iraqi tragedy raises sectarian tension | The

The authorities have taken several days to confirm the blast was an accident rather than a deliberate attack by one of Mexico's armed groups.

BBC: Mexico Pemex blast blamed on build-up of gas

"This was a very sinister, deliberate attack, " he said.

BBC: Man critically ill after being hit by lit petrol bomb