kān / tàn / duì / zài / yóu / tián / shēn / chù / fā / xiàn / le / yī / céng / hòu / dù / bù / zú / yī / mǐ / de / bó / yóu / céng / 。

勘探队在油田深处发现了一层厚度不足一米的薄油层。

The exploration team found a thin oil layer less than one meter thick deep in the oil field.