brachium
n. 肱；臂状部分或隆起
复数 brachia
例句
Brachium: the part of the upper arm or forelimb extending from the shoulder to the elbow.
肱，上臂：从肩至肘之间的上臂部分或前肢。
The image of crossed arms also comes through in the name because brachium was Latin for “arm.”
双臂交叉的形象同样也在这个单词中得到体现，因为brachium在拉丁语中就曾经有“臂膀（arm）”的意思。
Y-maze test was to observe training times for reaching 9/10 accurate response (to the dark brachium);
型迷宫实验主要观察大鼠达到9/10正确反应（跑到暗臂）所需的训练次数；
