The phrase "a main condition for" is correct and usable in written English.
It can be used when discussing essential requirements or prerequisites for a particular situation or outcome.
Example: "Having a stable internet connection is a main condition for participating in the online conference."
Alternatives: "a key requirement for" or "an essential factor for".
The State Department spokesman, Richard A. Boucher, today repeated that a main condition for American military involvement was for Liberia's president, Charles G. Taylor, to quit the country.
A main condition for patient safety is an open constructive safety culture.
An open, constructive safety culture is key in healthcare since it is seen as a main condition for patient safety.
Ending subsidies was a main condition of the International Monetary Fund for agreeing to a $1 billion standby loan for Nigeria.
The main condition for a country to join the Pacific Alliance is having bilateral trade pacts in place will all member countries.Also attending the Colombia meeting will be Stephen Harper, Canada's prime minister.
Their main condition for a ceasefire is the "full withdrawal" of foreign forces, which they consider an infringement of Afghan independence, and against Islam and Afghan culture.
He said Saturday that he was willing to meet face to face with Mullah Omar, the Taliban's leader, and with Gulbuddin Hekmatyar, an extremist insurgent leader, but said he would reject the Taliban's main condition for talks: a pullout of all foreign troops.
The main condition for provitamin A activity is that the carotenoid must possess at least one β-ionone ring residue (Fig. 1).
Khamenei described apprehending the opposite side's nature and gathering a correct understanding of his goal-setting as the main condition for using the heroic flexibility tactic, and said, "A technical wrestler also shows flexibility for technical reasons sometimes, but he would never forget who his rival is and what his main goal is".
The main condition for re-use to be for a 'good cause' seemed to be based on altruistic motivations.
The United States had made the release of the prisoners the main condition for ending the remaining sanctions.
