but can only approach when they know Nhorinha is not at the den. 但只能在确认诺琳尼娅不在巢穴后才能安装

319. We know where the den is now.
     我们现在知道巢穴的位置了
320. The following morning, they return to the den site.
     第二天早晨 摄制组再次来到巢穴
321. They want to rig their cameras,
     他们想安装摄像头
322. but can only approach when they know Nhorinha is not at the den.
     但只能在确认诺琳尼娅不在巢穴后才能安装
323. Is she nearby?
     它在附近吗
324. No, no signal yet.
     还没收到信号
325. Nhorinha is out of here, at least 1km.
     诺琳尼娅在一公里之外

来自《行星地球 第三季 第三集 Planet Earth S03E03 沙漠与草原》第 322 行