2 sentences for 先期 (xiān​qī)

1. 代表团成员已于昨日先期到达。

   dài​biǎo​tuán chéng​yuán yǐ yú zuó​rì xiān​qī dào​dá.

   Members of the delegation arrived in advance yesterday.

   Source: Dong Chinese Dictionary

2. 目前该项目仍处于先期调研阶段。

   mù​qián gāi xiàng​mù réng chǔ​yú xiān​qī diào​yán jiē​duàn.

   The project is still in the preliminary research stage.

   Source: Dong Chinese Dictionary