protocerebrum
n. [动] 前脑
例句
The brain was composed of protocerebrum, deutocerebrum and tritocerebrum.
大脑由前脑、中脑和后脑组成。
The brain was composed of protocerebrum, deutocerebrum and tritocerebrum;
脑较发达，包括前脑、中脑和后脑；
