Everyone with a possible interest in your brother's death must be thoroughly investigated.

所有可能与你兄弟死亡有利害关系的人都必须予以彻底调查。

The corrupt elements reported by the masses must be thoroughly investigated and prosecuted.

对群众举报的腐败分子要认真查究。

Applicants for government posts are always thoroughly investigated before being appointed.

申请担任政府公职的人总要经过彻底审查才能受到委任.

Dielectric, ferroelectric, and piezoelectric properties of PZT films have been thoroughly investigated.

研究了PZT厚膜的介电 、 铁电以及压电特性.