[背景了解]
　　文章取自于2003年6月的閱讀真題，是關于隱型眼鏡方面的文章，選段有點長，希望耐心看下，自己先猜下劃線部分單詞的意思吧
　　[文章部分]
　　Bille’s lenses are expected to reach the market in the year 2000, and one tentative plan is to use the Internet to transmit information on patients’ visual defects from the optician to the manufacturer, who will then produce and mail the contact lenses within a couple of days. The physicist expects the lenses to cost about a dollar a pair, about the same as conventional one-day disposable lenses.
　　[單詞學習]
　　tentative n.試驗, 假設 adj.試驗性的, 試探的, 嘗試的, 暫定的
　　visual adj.看的, 視覺的, 形象的, 栩栩如生的
　　defect n.過失, 缺點
　　conventional adj.慣例的, 常規的, 習俗的, 傳統的
　　disposable adj.可任意使用的
　　[課后作業]
　　今天的作業就是翻譯這一選段^^,來試下吧
　　Bille’s lenses are expected to reach the market in the year 2000, and one tentative plan is to use the Internet to transmit information on patients’ visual defects from the optician to the manufacturer, who will then produce and mail the contact lenses within a couple of days. The physicist expects the lenses to cost about a dollar a pair, about the same as conventional one-day disposable lenses.
　　參考答案如下：
　　比爾的隱形眼鏡預計將在2000年面市。有一項計劃正在醞釀中，那就是通過網絡將用戶（患者）的視力缺陷信息從配鏡師那傳輸給制造商，制造商將在幾天內制造出樣品并郵遞。相關技術人員預計這種隱形眼鏡每副一美元，價格約等于傳統型的日拋型。
　　關于a couple of，意思為“兩個，幾個”，我覺得既然是醞釀中的計劃，還是翻譯成幾天比較合適~`答案僅供參考，歡迎大家提出意見或建議