old chestnut

Lincoln's sigh, quoted above, is a bit of an old chestnut.

在上文中引用的林肯的叹息有点老生常谈.

The old chestnut of decision-making is the list of pros and cons.

用一种老办法来作出决策就是把优点、缺点因素列出来.

That hoary old chestnut should've been put to bed with the white australia policy.

这么老掉牙的东西还是和白澳政策一起塞到床底下去吧。

I like to fall back on an old chestnut.

我习惯用一个古老的理论。

He gave as his excuse for being late that old chestnut about the train being delayed.

他用火车误点那样老掉牙的说法作为自己迟到的借口.

The old man set spurs to his noble chestnut horse.

老人用刺马钉驱赶着他那栗色骏马.

Seedling chestnut trees of 25 years old were used as test material and the effects of sucrose, boric acid, temperature and agar on chestnut pollen germination were studied.

本试验以25年生实生板栗为试材，研究了蔗糖、硼、温度及琼脂等因子对板栗花粉发芽的影响，并对发芽动态作了仔细观察。