The striking drop in numbers round British coasts of such seabirds as arctic terns, kittiwakes, guillemots and puffins is probably a result of the disappearance of sand eels.
在英国周围的海岸，象北极燕鸥、三只鸥、海雀和海鸭等海鸟数量的显著减少，可能是由于玉筋属鱼类消失导致的。
The drop in Numbers was particularly sharp for profitable first-class travellers, as firms cut back on their travel budgets.
头等舱乘客数量的下降非常明显，原因是很多公司削减了旅游预算。
Some diseases prominent within the European population that could see Numbers drop as mixed-race grow are cystic fibrosis, coeliac disease, muscular dystrophy and haemophilia.
一些欧洲人种中显著的疾病很可能因为混血人种的增多而大大的减少，比如囊胞性纤维症，乳糜泄，肌肉萎缩症还有血友病。
Rivals such as Friends Reunited and MySpace have seen 'average session times' drop off, which then led to a reduction in visitor Numbers.
竞争对手诸如FriendsReunited以及MySpace出现了“平均访问时间减少”的情况，并导致访问人数下降。
The result shows that, for a definite hybrid composite, the bending strength increases as the numbers of the plies drop-off at a station reduce.
结果表明：对于一定的混杂复合材料，弯曲强度随着某一位置层错数目的减少而增加；
They found a spike coinciding with a drop in mammoth numbers some 15,000 years ago. To see how much less land birch would have covered, they used elephants as a proxy.
因为发掘的冰冻内脏样品表明猛犸象的众多食物中包括像桦树这样的小型树种，猛犸象数量的减少致使落叶树木增殖。
They found a spike coinciding with a drop in mammoth numbers some 15,000 years ago. To see how much less land birch would have covered, they used elephants as a proxy.
因为发掘的冰冻内脏样品表明猛犸象的众多食物中包括像桦树这样的小型树种，猛犸象数量的减少致使落叶树木增殖。
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