sky sign的意思|示意

There was still no sign of the sun when the rain cleared, but the sky was darkening second by second as the moon swept across its face somewhere behind the clouds.

雨停后人们仍不见太阳的踪影，但乌云背后月亮正在掠过太阳，天空也在一秒一秒变黑。

After that, there was always a line of waiting customers. But sometimes when the sky was the right shade of blue, Hitoshi hung a sign on the restaurant's door.

在那之后，总是有排队等候的顾客。

There was no sign of them in the next field, but ahead of him at the top of the hill he saw the young dog, looking black against the morning sky.

旁边的一块地里也没有羊的影子，在他面前的山顶上，他看到了那只年龄小的狗，在晨光的映衬下像一个黑影子。