通过窥视孔可连续观察试件表面的脱皮现象和得出激热开裂时间。

The fracture phenomenon and spalling time of the test piece can be observed continuously through a sight hole.

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手机左下方有一排小孔，正是iPhone 6s耳机接口所在的位置。视频称电钻左侧第二个孔可显示出隐藏的耳机插孔。

It points to the row of small holes on the left side that replaced the headphone socket present on the iPhone 6s and claims that drilling into the second hole on the left reveals a hidden socket.

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松紧带缠绕技术可创造出隧道、透视空间和窥视孔。

The technique of wrapping elastic bands creates tunnels, a perspective space, and peek holes.

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This is a game where you get a little plastic device, it's got 15 plastic numbers on it and one hole in this little plastic board and you can move those numbers up, down, left to right, and the goal is to take what's a random assortment of tiles and arrange them in numeric order and that's one of these little things you can play sort of absentmindedly.

在这个游戏中，你会拿到一个可塑的装置，上面有15个数字和一个孔,你可以将数字上下移动，左右移动，目标就是,拿到一个随机的组合后,将其按数字顺序排列,这个你可以随便玩玩。

哈佛公开课 - 计算机科学课程节选