• We have a long way to go before we attain such a high yield.
• We have still a long way to go toward understand ing how the planets came into being.
• We have a long way to go before we attain such a high yield.
• We have still a long way to go toward understand ing how the planets came into being.
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012