• At first these were suspected to be ... , but later it was proposed that ... ; to settle the question , a study was made.
• We know enough to tackle ( or solve ) some relevant questions .
• At first these were suspected to be ... , but later it was proposed that ... ; to settle the question , a study was made.
• We know enough to tackle ( or solve ) some relevant questions .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012