Word: 专家 (zhuānjiā)

一个专家小组讨论这个计划。

Yí gè zhuānjiā xiǎozǔ tǎolùn zhège jìhuà.

A panel of experts discussed the plan.

他是这方面的专家，这是肯定的。

Tā shì zhè fāngmiàn de zhuānjiā, zhè shì kěndìng de.

It is for certain, he is the expert in this field.

她说她并非专家。

Tā shuō tā bìngfēi zhuānjiā.

She said that she's no expert.

那位医生是儿童疾病的专家。

Nà wèi yīshēng shì értóng jíbìng de zhuānjiā.

The doctor is a great authority on children's diseases.