preexist

Dinosaurs preexisted human beings.

恐龙先于人存在

The facilitator will try to assist the group in achieving a consensus on any disagreements that preexist or emerge in the meeting so that it has a strong basis for future action.

因为 Tony Blair 可以说是一位四方会谈的 facilitator (这是 Tony Blair 的新工作)，al Qaeda 的组织里也有 facilitator， 前者版主倾向于译作 "推手";