He says the class action failed because it did not target a single action or policy by Wal-Mart.

他说，这起集体诉讼失败的原因是由于她们没有针对沃尔玛的单一行为或政策(提起诉讼)。

youdao

The zinc-finger design allows us to target a single gene, while the nuclease disrupts the gene.

我们可以通过对锌指的设计来靶向单个（特定的）基因，与此同时，核酸酶的存在将破坏该基因。

youdao

Not a single arrow missed its target.

箭不虚发。

《新英汉大辞典》

He says the class action failed because it did not target a single action or policy by Wal-Mart.

VOA: special.2011.06.24

But Pentagon officials said it is very difficult to successfully target a single person on the ground in such a bombing.

CNN: First strike targeted Saddam

Because the transforming and the filtering are done optically, this mechanism for pattern recognition is fast, allowing an image to be tested for the presence of a target in a single step.

ECONOMIST: Optical recognition

One of these tricks is the ability to swivel its instrument in quick time to acquire a strip, or mosaic, of images around its target in a single pass overhead.

BBC: Sharp-eyed Pleiades returns first pictures