Arnold had command of the strategically located West Point.

阿诺德指挥了战略位置优越的西点军校。

By 1944, Fletcher had command of a B-17 bomber and a ten-man crew.

【command】到1944年，弗莱彻指挥了一架B-17轰炸机和一个十人小组。

Consequently through speech it is usually decided whether a man is to have command of a language or not.

因此，通常通过言语来决定一个人是否掌握一门语言。

England and France both ravaged American commerce, but England was the more serious offender because she had command of the seas.

英国和法国都在蹂躏美国的商业，但英国是更严重的罪犯， 因为她掌握着制海权。

It's just in my opinion to truly have command or mastery of a word, you have to have all five of these.

在我看来，要真正掌握或掌握一个词，你必须具备所有这五个。