上文“Before the ballpoint pen, people used fountain pens. These old-fashioned pens had to be refilled often, and they leaked and easily made paper dirty.(在圆珠笔出现之前,人们使用自来水笔。 这些老式钢笔需要经常重新填充,而且漏水,很容易弄脏纸张。)”提到了老式钢笔的不便利性,G选项中inconveniences是...
Fountain Pens, Ballpoint Pens, Multi-Function Pens Product name 3pcs Golf Clubs Models Ballpoint Pen Material metal+plastic Size standard size Usage Relax ,Advertisement, Promotion,Gifts,Kids Children Toys Color Customized Colour Feature Giveaways,Funny,Eco-friendly Logo Customized Logo Shape Multi-shap...