They do so by employing a strategy known as short-selling.
At the same time, Mary begins taking advice from her best friend, also employing complicated strategies.
It has employed a dual strategy to achieve these two objectives.
Although this strategy is often recommended, some professional players successfully employ other strategies as well.
The Mail has form on employing such a strategy.
In early 2001 Massoud employed a new strategy of local military pressure and global political appeals.
Officials employed a strategy that called for the evacuation of flood prone areas first.
"Robots could employ a similar strategy in the polar region of Mars."
Dorrance employed a unique strategy, playing Harris in the second half of the games.
Taking on many clients, they employ standardized materials and strategies for different campaigns.