脑量 meaning in English

brain volume
brain weight

Everyone got better at imitation , intensifying the pressure to enlarge the brain still further in a kind of cerebral arms race
等到每个人都有很强的模仿能力后，使脑子变得更大的演化压力就会加强，启动了提升脑量的军备竞赛。
The human brain is about as big as the genes can make it ? three times bigger , relative to body weight , than the brains of our closest relatives , the great apes
人的脑子是基因所能制造的最大脑子以脑量占体重的比例来说，人脑是大猿（人在自然界最亲近的亲戚）脑子的三倍大。
Not only does it mean that another species of human coexisted with our ancestors just yesterday in geological terms , and that our genus is far more variable than expected , it raises all sorts of questions about brain size and intelligence
因为那不但意味著我们的祖先直到最近还有一个人类物种作伴、人属的变异?围比过去预期的大得多，那些结论还引起有关脑量与智力的各种问题。