to begin or participate in an agreement or discussion
契約や議論に参加する、または始める (keiyaku ya giron ni sanka suru, matawa hajimeru)
"The two countries agreed to enter into a new trade deal."
"二国は新しい貿易協定に入ることに同意しました。" (Nikoku wa atarashī bōeki kyōtei ni **hairu** koto ni dōi shimashita.)
to move backward; to retreat
to invest in something; to believe in an idea or plan
to end up in a particular situation or condition; to result...
to make efforts to improve the areas where you are lacking
to struggle and keep working hard to achieve success
to make a failing business successful again