The helm of a boat or ship is the part that is used to steer it.
例句
I got into our dinghy while Willis took the helm and positioned the boat for the photograph.我钻进我们的小艇，威利斯掌舵，将船摆好位置准备拍照。
N-SING
（政府或组织中的）领导位置
You can say that someone is at the helm when they are leading or running a country or organization.
例句
He has been at the helm of Lonrho for 31 years.他执掌伦罗公司已达31年。...Yutaka Kume, who took the helm as Nissan's president in June 1985.1985年6月成为日产汽车社长的久米丰
英汉词典释义
n.
舵
the helm of a ship船的舵The boat seemed very slow to answer to any movement of the helm.这只船似乎对舵的转动的反应很不灵敏。
掌舵；掌管
Who was at the helm when the collision occurred?当碰撞发生时,谁在掌舵?The company began to make profits again with the new managing director at the helm.新任总经理主管后，公司又开始盈利了。
接管
When Mr Davies retired, his daughter took the helm.戴维斯先生退休后，他女儿接管了公司。
英英词典释义
Noun
1. steering mechanism for a vessel; a mechanical device by which a vessel is steered
2. a position of leadership;
"the President is at the helm of the Ship of State"