Contrast: segment descriptor A-bit writeback
优点： 输出均值更接近 0，梯度更稳定。
。关于这个话题，同城约会提供了深入分析
* Passed 8,192 random tests; not independently verified on our 10K test suite yet.
Escalation of violence between the volatile neighbours makes a Qatar-mediated ceasefire appear increasingly shaky