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His theory is perfectly sound.是什么意思？

His theory is perfectly sound.

他的理论完全正确。

相关词汇
his theory is perfectly sound

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

theory

n. 学说，理论，原理，推测；

is

vt.& vi. 是（be的三单形式；n. 存在；

perfectly

adv. 完美地，理想地，完全地，无瑕疵地；

sound

n. 声音，声响，音调，声调，声波，嘈杂声；vi. 响，发声，听起来，好像，回响，[音乐]乐器等被奏响；vt. 使出声，使发声，清楚地发出，宣布，发表，颂扬；adj. 健全的，合理的，完好的，无损的，明智的；adv. 彻底地，充分地；
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He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
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使飞机减速的螺旋形气流涡旋
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你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
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详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
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撒切尔女男爵的主张在很多人看来是可信的。
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一份耕耘，一份收获。
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该法令迫使工会推迟罢工。
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一块6米见方的地毯面积是36平方米。
He was sounded by his mother every day.
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The hunter is an excellent shot.
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His theory is perfectly sound.
他的理论完全正确。
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去牛津的两条路我都试过了，我看距离差不了多少。
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自从我生病之后, 他们一直没来看过我。