一只快乐的小鸟在一棵落叶松上歌唱，仅此而已。

A merry little bird was singing on a larch-tree, but nothing more.

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海滩松上的树皮甲虫会有选择性地寄居在松树上，避开年轻健康的松树。

Bark beetles in lodgepole pine used to be more selective, leaving the younger and healthier trees alone.

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去年五月，在他的第五十二个马拉松上，他打破了三个小时的障碍，用2小时58分23秒跑完了驻韩美军凯西军营的马拉松。

Nope, sorry. But last May, in his 52nd marathon, Noble broke through the 3-hour barrier with a 2:58:23 at the Camp Casey U.S. Army base in South Korea.

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