Now imagine a pine tree with all those little densely packed needles.

现在（大家）想象一棵布满了密密麻麻的小针叶的松树。

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The red rose asked the pine tree what the birds were doing.

红玫瑰问松树，鸟儿在干什么。

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This pine tree looks tall and strong but actually its trunk is hollow.

这棵松树看起来又高又壮，但实际上它的树干是空心的。

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The heater was on high, belting out a stinging warmth that smelled of the little cardboard pine-tree air freshener dangling from the rearview mirror.

NEWYORKER: Friendly Fire

But though the picture lies thus tranced, and though this pine-tree shakes down its sighs like leaves upon this shepherd's head, yet all were vain, unless the shepherd's eye were fixed upon the magic stream before him.

NPR: Excerpt: 'Moby-Dick'

He could have been sitting alone atop the leader-board if his tee-shot on 13 hadn't ended up on the pine straw and behind a tree 10 yards outside the fairway.

WSJ: At the Masters Saturday, A Little Bit Of Everything