Bismarck ruled Germany by a strong hand.是什么意思？

Bismarck ruled Germany by a strong hand.

俾斯麦用铁腕手段统治德国.

Bismarck

俾斯麦(Otto von,1815-1898，德国政治家，德意志帝国第一任首相)；

ruled

adj. （纸张）有平行线条的；

例句
He ruled with absolute power.
他实行独裁统治。

Germany

德国（欧洲国家）；

例句
He was well acquainted with the literature of France, Germany and Holland...
他对于法国、德国和荷兰的文学了如指掌。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

strong

adj. 强的，坚强的，强烈的，强壮的；adv. 强劲地，猛烈地，大大地，坚强地；

例句
Pamela was unrepentant about her strong language and abrasive remarks.
对于自己的激烈言辞和恶语相向，帕梅拉并无悔意。

hand

n. 手，协助，帮助，（工具等的）把，柄，掌管；vt. 传递，交给，搀扶，支持；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。