有一小片孤零零的金盏花，如果天空乌云密布，它就会匆忙地闭合。

There is a little single marigold which shuts up in a hurry if the sky becomes clouded.

youdao

如果天空是灰色的话，那海洋就会呈现灰色。

When the sky is grey, the sea looks grey too.

youdao

如果天空可以化为碎片。

Well if the sky can crack.

youdao

Maybe it could refer to either the poet or the sun throughout the entire line, if you think of the mantle blue as being the actual sky that the sun is able to twitch over his shoulder.

或者两者皆可,从整句的行文看来，如果你们把蓝色的丝巾看作是真实的天空的话,那么太阳的确是能够在他的肩上轻轻颤动。

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