1913-Igor Sikorsky becomes the first man to pilot a four-engine aircraft.

And we can point to large companies like Sikorsky, whose helicopter sales to Brazil help sustain a large, skilled workforce in Connecticut, Alabama, and Pennsylvania.

从大公司来讲，我们可以看看西科斯基公司.这个公司制造的直升机远销巴西，其巨大的销售量维持着其在康涅狄格州，阿拉巴马州和宾夕法尼亚州的熟练劳工的就业。

Ever since, things haven't been the same at the sprawling industrial giant, which manufactures pratt& whitney aircraft engines, Sikorsky helicopters, carrier heating and air-conditioning equipment, and Otis elevators and escalators.

从那以后，这个躺着的工业巨人开始洗心革面，分组成普拉特和威特尼飞机引擎公司、扩斯盖直升飞机公司、瑞尔暖气系统和空调设备公司和欧体斯升降机和自动扶梯公司。

Sikorsky plans to sell 60 Black Hawk helicopters to Taiwan under the deal presented to the US Congress on Friday.

根据奥巴马政府上周五向美国国会呈交的军售方案，西科斯基将向台湾出售60架黑鹰直升机。

Sikorsky, the company's helicopter unit, which has suffered from cutbacks in defense spending, earns just 9.5%.

此外，受到美国国防开支削减的影响，该公司直升机部门西科斯基（Sikorsky）的营业利润率仅有9.5%。

It's long been rumored that United Technologies is pondering a sale of Sikorsky.

一直有传闻称，联合技术公司正在考虑出售西科斯基。

Inward investment is strong, from software ( Google) to Black Hawk helicopters ( Sikorsky) via domestic appliances ( Samsung) and tea ( Twinings).

国内的投资强大，从软件（谷歌）到黑鹰直升机（美国西科斯基飞机公司），国内电器（三星）和茶叶（唐宁茶）。

Results The mortality rate in the experimental group with stomach perfusion of the Senecio water decoction decreased significantly.

结果灌胃千里光水煎剂的实验组死亡率显著降低。

Conclusion The traditional Chinese medicine Senecio has a certain suppressive effect on staphylococcus aureus.

结论中药千里光对金黄色葡萄球菌有一定的抑制效果。

The Pathogenous Law of Black Spot of Senecio Cannabifolius Less and Preliminary Report on Screening of Agent for Prevention and Control

返魂草黑斑病发病规律及防治药剂筛选初报

General situation of the toxicity researches on Senecio

千里光属植物的毒性研究进展

Conclusion All of them are isolated from the plants of Senecio L. for the first time.

论它们均为从千里光属植物中首次分到。

Senecio liver toxic components contain pyrrolizidine alkaloids. Their existence has been generally concerned about the potential risks.

千里光含有肝毒性成分吡咯里西啶类生物碱，其存在的潜在风险受到普遍关注。

Microscopic Identification of Senecio argunensis Turcz.

羽叶千里光的显微鉴定。

Effect of Penicillin and Gibberellin on Seed Germination and Seedling Quality of Senecio Cannabifolius less.

青霉素与赤霉素对返魂草种子萌发及成苗素质的影响。

Anti-Virus Activities of the Extract and Effective Components Isolated from Senecio Cannabifolius Less

返魂草提取物及其有效成分抗病毒作用的研究

Tissue Culture and Rapid Propagation of Senecio cineraria 'Silver Dust

细裂银叶菊的组织培养和快速繁殖

You'll never learn to swim properly while you throw legs and arms about.

你这样手脚乱蹬是决不会把游泳学好的.

Her boy may have learnt no better!

她的儿子不会学好.

One can not learn a language well unless one works hard.

学好一种语言非下苦功不可.

It takes pains to learn a foreign language well.

学好外语需要花大气力.