1·This requires the detector to be positioned on the far side of the gas sample, which makes its use in some enclosed or remote environments very difficult.
这要求探测器被放置在气体样本的对面，这使得它在一些封闭或较远的环境里的应用变得十分困难。
2·His answer was that I must not imagine each limb as being individually positioned and moved by the operator in the various phases of the dance.
他回答说，我必须避免作出如下的想象，即在舞蹈的不同阶段，操作者分别，个别地放置和移动每个枝节。
3·The depositor positively positioned the preposition in that position on purpose.
储户有意确信地介词放置在那个位置。
4·It was later discovered that engineering students at Farnborough Technical College had constructed and positioned the UFOs in a bid to raise money for charity.
事后发现这些“UFO”是范堡罗科技学院工程系的学生制造并且放置的，为的是竞标一场慈善募捐。
5·Then, in the second stage, two more grids are positioned at a greater distance 'downstream' and operated at low voltages.
在第二阶段，另两个栅格放置的距离比较大，并在低电压下工作。