1. Since few shoppers know what the UPC means, there is a sign on the shelf giving the name of the product, its weight and its price.
    因为顾客几乎不知道条形码所指代的东西，所以货架上一般有一个小牌，写着商品的名称、重量及价格。

2. Seventy-two search planes, plus dozens of ships, failed to turn up any sign of the missing aircraft.
    72架搜索飞机加上几十艘船，都没能找到失踪飞机的任何踪影。

3. Set up on a downtown parking lot, its entrance marked by a massive sign that reads, in English, "Good Music from Your Body Heart on the World Line",
    它建在市中心的一个停车场上，入口处有一巨大的招牌，上面用英文写着"在世界线上从你心底发出的优美音乐"（Good Music from Your Body Heart on the World Line）。"

4. Please sign the agreement.
    请签协议.

5. My hand held his elbow to steer him, but he stepped forward with no sign of hesitation or stoop, his shoulders squared, his head high, as though he were guiding me.
    我用手搀着他的肘部给他领路，但他昂首挺胸地前行，没有丝毫的犹豫或屈从，好像是他在给我带路。

6. One health official recommends that when you sign a medical form you change it to make it clear "that you do not consent to having information re-released or sold to a second party without your direct, written consent".
    一位卫生官员建议，当填写医疗表格时，你可改变一下，清楚地表明"你不同意在没有你的直接书面同意的情况下将你的信息泄露或出卖给第二方"。

7. That all new students fill out and sign after attending a seminar on roommate relations.
    所有新生在参加有关室友关系的讨论会之后，都要填写签署该份合同。

8. If parents were prepared for this adolescent reaction, and realized that it was a sign that the child was growing up and developing valuable powers of observation and independent judgment,
    如果家长对青少年的这种反应有思想准备，并且意识到这象征着孩子们正在成熟和正在发展宝贵的观察力、独立判断力，

9. In the U. S., however, it is taken as a sign of skillfulness or being competent to solve a problem, or fulfill a job successfully, with speed.
    但在美国，能迅速而又成功地解决问题或完成工作，则被视为是有水平、有能力的标志。

10. I opened the two bags with my personal effects, and after looking through them, two officials chalked a sign of approval on them.
    我打开两个装有个人物品的行李包，两个官员仔细查看了这两个包，然后就用粉笔划了个核准通过的记号。