But YouTube's lead was already becoming difficult to compete with.
This Doctor's regeneration first happened in 1966, when William Hartnell, who was 58, was becoming difficult to work with.
Some bacterial infections are becoming difficult to control with antibiotics, so there is a growing interest in the use of bacteriophages to treat infections in humans.
With phone lines down, communicating with teams on the ground is becoming difficult except through high frequency wireless sets.
However, filling the conductive layer with the micro-vias is becoming difficult using the conventional plating process or the electrical conductive paste.
It's becoming difficult to find an "unpopular" technique or algorithm that isn't already swarming with researchers.
It's becoming difficult to find an "unpopular" technique or algorithm that isn't already swarming with researchers.
The accomplishments are becoming difficult to ignore.
It's becoming difficult, he says.
Retail survival is becoming difficult.
