因此，解调前必须去除频率偏差。

So frequency offset must be removed prior to demodulation.

youdao

对遭受侵染的树木没有已知的处理办法，必须去除和销毁。

There is no known treatment for trees infested with the beetle; they must be removed and destroyed.

youdao

我们必须去除关节内的骨折碎块及通过外科手术稳定不稳定的关节。

Removal of the intra-articular loose fragments and surgical stabilization of an unstable hip joint are imperative.

youdao