to suddenly start smiling widely
突然に広く笑い出す (totsuzen ni hiroku warai dasu)
"When she saw the surprise gift, she burst out smiling."
"サプライズギフトを見たとき、彼女は突然大きく笑い出した。" (Sapuraizu gifuto o mita toki, kanojo wa totsuzen ōkiku warai dashita.)
to be confident and relaxed about who you are
to disconnect mentally and drift into thoughts
to arrive or appear at an event or place, often unexpectedly
to try to start communication or discussion with others
to start crying a little
to show gratitude by being kind to others in return
