Establishing the date at which jade objects were carved has so far proved problematical. |
The wide political diversity in the resistance proved extremely problematical. |
The gear change was a weird electro-pneumatic device and at the end of the 1935 year was still problematical. |
It is unquestionably problematical to make a distinction between thought and feeling. |
However, comparison of these extant hemichordates with the erect, fenestrate colonies of Dictyonema is problematical. |
Our current citizenship laws are problematical but why go the sledgehammer route which will just whip up racism? |