1.we pass by each other,but you choose to be silent
2.we pass by each other,but you choose to be silent again.
3.we pass by each other,both choose to be silent.
第二句的依然选择沉默是承接第一句的你吗?不是 = = 分开的。。。我们擦肩而过,依然选择沉默后半句的主语有可能是你，我，或者我们。