Within the smaller area more intensive observations are made to pin down prequake signals . 在较小的区域内，还要进行更慎密的观察以便记录临震信息。
I've got a good nose-once i'm on the trail, i don't leave it-not till i've pinned down my quarry . 我的嗅觉很灵--我闻出气味不正，就紧追不舍一直到我的猎获物束手就擒才罢休。
Great britain's air force and, to a lesser extent, her ground and sea forces were largely pinned down to the defense of her home country . 英国空军及其小规模陆海军，均着眼于基本上的防御。
The vietnamese have broken our heart several times before, and we just can't assume success until everything is pinned down . 越南人以前曾几次伤我们的心，所以在一切敲定之前我们还不能说成功。
You must pin down every quotation to its author 你一定要确定每一条引文的作者是谁。
Our soldiers know how to pin down the enemy 1我们的战士知道如何牵制敌人。
He refused to be pinned down on the question 他拒绝对这个问题明确表态。
Osean g pinned down by crossfire ! we can ' t advance 我军陷入交叉火力当中!不能向前推进了
John ' s leg was pinned down under the car after the accident 事故中，约翰的腿被压在车身底下。
