Churn is a mechanism by which labour markets reallocate workers towards more efficient ends .
跳槽是劳工市场向效率更高的岗位重新分配员工的一种机制。
11 Roll clouds form when updrafts and downdrafts churn clouds into a long , spinning cylinder .
11卷轴云形成时，上升气流和下沉气流将云搅动成为一个长而旋转的圆柱。
Truly great ideas churn in the back of your mind , slowly moving forward and quietly begging for attention until you just can 't take the damn voices anymore , so you start doing it .
