specimen

这个昆虫标本对于分类学研究至关重要。

This insect ___specimen is crucial for taxonomic studies.

博物馆为其收藏获得了一个新标本。

The museum acquired a new ___specimen for its collection.

科学家收集了一只稀有昆虫标本用于研究。

The scientist collected a rare insect ___specimen for research.