Фото: Abdul Saboor / Reuters
Жители Кубы вышли на ночные протесты с кастрюлями01:06
，详情可参考新收录的资料
Дания захотела отказать в убежище украинцам призывного возраста09:44，更多细节参见新收录的资料
hkg1::1772482323-2flJ6Wa5vr6w0hxwU509ChZ2EZrUwiEF。新收录的资料对此有专业解读
Now, this seems to suggest that a locomotive towing a bunch of cars would have to be more massive than all the cars put together. That would be true if the cars were using static friction—but they aren't!