1·Both sides showed fealty to the historical ideal by writing under Roman pen names.
论战双方通过使用罗马笔名写作来表示对历史理想的忠诚。
2·In the box, there is a book and a pen, people can use them to sign their names and write down everything what they want to say.
盒子里面有一本本子和一只笔，供人们写下自己的名字以及其他想要说的内容。
3·You can use a colored gel pen to write dates, names, and other highlights about the activities in the pictures.
您可以使用彩色中性笔写日期，姓名，和其他突出的活动图片。