to gain knowledge or understanding of something new
adquirir conocimiento o comprensión de algo nuevo (adquirir conocimiento o comprension de algo nuevo)
"Through cultural exchange, people learn about different lifestyles and beliefs."
"A través del intercambio cultural, las personas aprenden sobre diferentes estilos de vida y creencias." (A traves del intercambio cultural, las personas **aprenden sobre** diferentes estilos de vida y creencias.)
to reduce the amount of pollution produced
to prepare a plan or list carefully
to maintain contact or communication with someone over time
to prepare in advance for possible events or risks
to introduce changes to improve a system or policy
to change direction to the right