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After providing a definition of opportunity cost, I use this concept to examine how fertilizer should be allocated among different crops, and how fertilizer expenditures should be allocated among different fertilizers.
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首先，我要给机会成本下个定义，然后再用这一概念来分析怎样在不同作物之间对肥料进行分配，以及怎样在不同肥料之间对资金进行分配。 |
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After puberty, a girl's waist narrows in proportion to her hips as oestrogen levels rise, and then expands as the hormone concentration decreases with age.
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青春期后，由于雌激素分泌增多，女人腰部与臀部的比例增大，而随着年龄的增长荷尔蒙分泌会下降，腰身也将变粗。 |
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After pulling him over for speeding, police arrested 24-year-old Al Gore III for possessing marijuana and prescription drugs.
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当时24岁阿尔·戈尔三世由于超速被警察拦下，随后发现他私自持有大麻和处方药。 |
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After purifying the carbon nanotubes absolutely, we obtained the stable solution by modifying organic molecular on the surface of carbon nanotubes.
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我们在对碳纳米管提纯的前提下，通过化学修饰的方法制备出稳定存在的碳纳米管溶液。 |
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After push down this button, display unit shows 0, and no signal is got in the main output and the AUX output.
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复位键:按下此键时显示为0,表示没有线路信号进入主输出和辅助输出. |
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After putting on a show in their hometown of Magdeburg in 2001， Bill and Tom met Gustav Schfer (born September 8， 1988) and George Listing (born March 31， 1987).
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2001年他们在马格德堡的一个小镇里演出后，彼尔和汤姆遇到了盖斯特?沙佛儿(1988年9月8日出生)和乔治?里斯汀(1987年3月31日出生)。 |
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After putting on the headgear, shoes or gloves, fix them firmly with strap.
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在使用泡胶护具时，请将贴紧魔术贴。 |
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After putting up with her husband's abuse for years, Agnes finally decided to divorce him.
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艾格妮丝忍受了丈夫多年的虐待后，终于决定和他离婚。 |
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After qualified by league organization and this service team, you will take an oath on it and then you could receive a service card, a volunteer badge and a uniform registered number.
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经团组织、本服务队审核合格后，进行宣誓，领取“中国注册志愿者服务证”、“中国志愿者胸章”，并获得统一使用的注册号（注册号由宝鸡市青年志愿者行动指导中心统一编制）。 |
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After qualifying for the Group stage of the Champions League, SS Lazio Rome can now invest on the transfer market; the right name could be Bayern Munich central defender Daniel Van Buyten; the 29 year old belgian player doesn't get many chances to play ac
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成功晋级欧冠小组赛后，拉齐奥重新关注转会市场；进入球队视线的是拜仁慕尼黑队的中卫范比藤，这名29岁的比利时中卫在拜仁俱乐部得不到足够的出场机会，德国俱乐部开始考虑是否出售该球员。 |
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After question part, President Liu of Microsoft Club presented a keepsake to Wang, to thank his wonderful lecture and his coming.
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在提问环节之后，现任微软俱乐部主席刘畅代表微软俱乐部向王知衍教授赠送了纪念品，感谢王教授的精彩演讲，感谢他对本次活动的支持。 |
