[4]全员劳动生产率为国内生产总值（按2020年价格计算）与全部就业人员的比率。
T is assignable to S.That is, it is a “consistent subtype”. This is subtyping extended
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We'll be testing and reviewing the M4 iPad Air as soon as we can, so keep checking back for updates.
Most significant is fiscal drag, where the thresholds that apply to different rates of tax on income are frozen.
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