名詞 biro:

1. a pen that has a small metal ball as the point of transfer of ink to paper
   同義詞：ballpoint, ballpoint pen, ballpen

1. These biros retail at/for 70p.
   這些圓珠筆零售價為70便士。
2. You may write in biro or pencil.
   你用圓珠筆或鉛筆書寫均可。
3. Laszlo Biro invented the ball-point pen.
   拉斯洛·拜羅發(fā)明了圓珠筆。