STEM与日常科技·英语30篇（9）

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冰箱如何在门长时间开启时发送提醒警报

Refrigerators with smart features use magnetic door sensors that check position every ten seconds.
If the door remains open past sixty seconds, it triggers both an internal beep and a phone notification.
The alert stops only when the door fully closes and seals again for three full seconds.
Families with young children find this especially helpful during busy kitchen moments.
Some models add a gentle countdown voice message starting at forty-five seconds to give warning time.
Energy use jumps quickly when doors stay open, so alerts help cut electricity bills month after month.
You can pause notifications during parties or holiday cooking without disabling the safety feature.
The sensor works reliably whether the fridge is full or nearly empty thanks to its placement near the hinge.
No app setup is needed for basic alerts — they activate right out of the box.
Many users say this small function has already saved them from spoiled milk twice this year.

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

Families with young children find this especially helpful during busy kitchen moments. 有幼儿的家庭发现，这在厨房忙碌时特别有用。
Refrigerators with smart features use magnetic door sensors that check position every ten seconds. 带智能功能的冰箱使用磁性门传感器，每十秒检测一次门的位置。
You can pause notifications during parties or holiday cooking without disabling the safety feature. 聚会或节日烹饪时可暂时关闭通知，而不影响安全功能。

这篇中文题目最接近哪一句？冰箱如何在门长时间开启时发送提醒警报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？带智能功能的冰箱使用磁性门传感器，每十秒检测一次门的位置。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） What Lets Refrigerators Send Alerts When Doors Stay Open Too Long How to cook noodles A maths worksheet

Families with young children find this especially helpful during busy kitchen moments.

Families with young children find this especially helpful during busy kitchen moments.

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：Families with young children find this especially helpful during busy kitchen moments.