immediate: If True and the internal value is already not None, return immediately. Defaults to True.
规模扩张为何陷入不经济？很多品牌陷入低质量发展，规模化扩张陷入了“不经济”困境——门店数越多越分流，折扣率越大业绩跌得越快。，更多细节参见PDF资料
。WPS官方版本下载对此有专业解读
The price of oil grabs most of the energy-related attention during conflicts in the Middle East for understandable reasons: oil is the commodity on which the world runs (still) and analysts have roughly reliable models for what every $10 per barrel increase in cost does to global growth and inflation.，这一点在爱思助手中也有详细论述
Having used the Colorsoft Kids on several occasions, I wouldn’t say it’s going to be a must-have upgrade for most folks. Then again, if you love magazines, graphic novels, or a good book cover, it’s the best color e-reader in its price range — and that’s without a $50 discount.