科学素养与生活应用·英语30篇（2）

2 / 30

已读 0 / 30 课

二维码为何不只是方块图案

QR codes store data in both horizontal and vertical directions, unlike standard barcodes.
Each black-and-white module represents binary digits that scanners decode into text, URLs, or commands.
Modern smartphones read them instantly using built-in cameras and image-processing algorithms.
Restaurants use them for contactless menus; museums embed them in exhibits for audio explanations.
Their error-correction capability allows scanning even if part of the code is damaged or obscured.
Developers can customize colors and logos while preserving readability—making them useful for branding.
Security features like dynamic QR codes help prevent fraud by changing content after each scan.
Because they require no internet to generate, QR codes remain widely accessible across device types.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Modern smartphones read them instantly using built-in cameras and image-processing algorithms. 现代智能手机利用内置摄像头和图像处理算法，可即时读取二维码。
QR codes store data in both horizontal and vertical directions, unlike standard barcodes. 二维码在水平和垂直两个方向存储数据，而普通条形码只能沿一个方向存储。
Developers can customize colors and logos while preserving readability—making them useful for branding. 开发者可在保持可读性的前提下自定义颜色和图标，便于品牌应用。

这篇中文题目最接近哪一句？二维码为何不只是方块图案一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？二维码在水平和垂直两个方向存储数据，而普通条形码只能沿一个方向存储。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Why QR Codes Are More Than Just Squares How to cook noodles A maths worksheet

Modern smartphones read them instantly using built-in cameras and image-processing algorithms.

Modern smartphones read them instantly using built-in cameras and image-processing algorithms.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Modern smartphones read them instantly using built-in cameras and image-processing algorithms.