很难精确指出趋势开始的确切时刻。

It is challenging to ___pinpoint the exact moment when the trend started.

研究人员正试图精确找出影响决策的因素。

Researchers are trying to ___pinpoint the factors that influence decision-making.

这项新技术能高精度地定位代码中的错误。

The new technology can ___pinpoint errors in the code with high accuracy.