attenuated [n]
attenuated 在此为形容词，修饰名词。
The attenuated vaccine is effective.
减毒疫苗是有效的。
稀薄的；精炼的；渐狭的（指叶片基部）；纤细的,薄的。；稀薄的,精细的,精炼的。；向基部逐渐变细成叶柄状延伸。
纤细的,薄的。
Slender, thin.
稀薄的,精细的,精炼的。
Rarefied, thin, refined.
向基部逐渐变细成叶柄状延伸。
Gradually tapering into a petiole-like extension toward the base.
The attenuate solution was too weak to be effective.
这种稀释的溶液太弱，无法生效。
用法提示：此处 attenuate 作形容词，意为“稀释的”，修饰 solution，表示溶液浓度降低。
Only an attenuate signal reached the receiver after the storm.
风暴过后，只有微弱的信号到达接收器。
用法提示：此处 attenuate 作形容词，意为“减弱的”，修饰 signal，表示信号强度降低。
The doctor prescribed an attenuate dose to avoid side effects.
医生开了减弱的剂量以避免副作用。
用法提示：此处 attenuate 作形容词，意为“减弱的”，修饰 dose，表示剂量减少。
attenuated 在此为形容词，修饰名词。
The attenuated vaccine is effective.
减毒疫苗是有效的。
此结构表示状态，attenuated作表语形容词。
The signal remains attenuated.
信号仍然减弱。
过去分词短语作定语，表示被动。
The light, attenuated by fog, was dim.
被雾气减弱的光线很暗淡。
grammar · medium
易错句子The signal is attenuate after passing through the cable.
正确表达The signal is attenuated after passing through the cable.
错误是使用了动词原形 "attenuate" 作形容词。描述状态时应使用过去分词 "attenuated" 作形容词，表示“被衰减的”。
grammar · medium
易错句子We can attenuate the risk by taking precautions.
正确表达We can reduce the risk by taking precautions.
虽然 "attenuate" 可以表示减弱，但在此语境下 "reduce" 更自然常见。"attenuate" 常用于物理量或抽象力量的减弱，而 "reduce" 更通用。
extenuate 常与罪行、错误等搭配，表示减轻过错的程度；而 attenuate 侧重减弱力量、强度或浓度。
tenuous 形容事物细而脆弱，多用于抽象联系或证据；attenuate 作形容词时指物质稀薄或形体纤细，但更常用作动词表示减弱。
Choose the next layer that will help you use attenuate with more confidence.
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