defensive secondary
collocation防守后场（美式足球）
The defensive secondary struggled against deep passes.
防守后场在面对长传时表现不佳。
中学；中等学校
先理解核心含义，再看它在真实句子里的用法。
中学；中等学校
a secondary school
The coach told the secondary to watch for deep passes.
教练告诉防守后卫注意深远传球。
附着在鸟类尺骨(前臂)的飞羽
Any flight feather attached to the ulna (forearm) of a bird.
美式足球中列队于锋线后方的防守球员
the defensive football players who line up behind the linemen
由飞机应答器对雷达装置广播的询问信号的响应产生的雷达回波,包含简单初级回波无法提供的额外编码识别和情境数据
A radar return generated by the response of an aircraft's transponder to an interrogation signal broadcast by a radar installation, containing additional encoded identification and situational data not available from a simple primary return.
次级线圈,通过初级线圈通电感应产生电流
coil such that current is induced in it by passing a current through the primary coil
A current in the primary coil induces a voltage in the secondary.
初级线圈中的电流会在次级线圈中感应出电压。
The team's secondaries made three interceptions in the first half.
该队的防守后卫在上半场完成了三次抄截。
Choose the next layer that will help you use Secondary with more confidence.
Recommended next
Missing: Usage patterns
Complete this area with usage patterns.
Missing: Common mistakes
Complete this area with common mistakes.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
防守后场（美式足球）
The defensive secondary struggled against deep passes.
防守后场在面对长传时表现不佳。
变压器次级线圈
Connect the load to the transformer secondary.
将负载连接到变压器次级线圈。
初级线圈和次级线圈
The primary and secondary of the transformer are wound on the same core.
变压器的初级线圈和次级线圈绕在同一个铁芯上。
初级飞羽和次级飞羽
In most bird species, the primaries are longer than the secondaries.
在大多数鸟类中，初级飞羽比次级飞羽长。
Use Secondary naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 second（第二）：secondary 作名词常指“第二道/次要角色”，如鸟的次级飞羽、后卫球员、次级线圈，都是排在后面的梯队。
语域：mixed 常见场景：ornithology、American football、radar/aviation、electrical engineering、nuclear weapons、finance 该词作名词时，义项分属鸟类学、美式足球、雷达、电工、核武器、金融等不同专业领域，整体多用于技术性、专业性或正式场合；日常口语中较少单独作名词使用。
该名词有复数形式 secondaries。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.