to be so worried or upset that you don't know what to do
何をすべきかわからないほど心配したり、落ち込んだりしている
"I'm at my wits' end trying to calm the kids down."
"私は子供たちを落ち着かせようとするあまり、限界に達しています。"
to enter data using a keyboard or keypad
to become very tired and lose motivation due to overwork
performing very well; full of energy and success
to adapt to difficulties and keep going
to have a lasting effect or influence
a situation in which something has suddenly failed or collap...
