1. 后部的：retrainee 再训练者 | retral 后部的 | retransfer 重新传送
2. retral什么意思
2. 向后的：retractor 收缩肌 | retral 向后的 | retral 后部的
retral的反义词
adj
1. at or near or toward the posterior
2. moving or directed or tending in a backward direction or contrary to a previous direction
Synonym: retrograde