“Bury one's head in the sand”可不只是“把头埋进沙子里”的意思，还有“逃避现实，完全忽略某件事”的意思。

【例句】
You can bury your head in the sand if you want to, but Bruce is stealing, and sooner or later we’re going to have to deal with it.
如果你愿意，你可以逃避现实，但是布鲁斯在偷东西，我们迟早要对付他。

Cheer up. It's no use burying your head in the sand.
振作起来，在困难面前采取驼鸟政策是没用的。