在这个市场上，真正的古董很难找到。

Genuine antiques are hard to ___come ___by in this market.

随着经济下滑，稳定的工作越来越难获得。

With the economic downturn, stable employment is increasingly tough to ___come ___by.

她通过人脉设法获得了一些机密文件。

She managed to ___come ___by some confidential documents through her connections.