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navigable + noun
The navigable river connects two cities.
这条可通航的河流连接两座城市。
可航行的；可通航的
先理解核心含义，再看它在真实句子里的用法。
可航行的；可通航的
able to be sailed on or through safely
The navigable river connects two cities.
这条可通航的河流连接两座城市。
可航行的；水深和宽度足以供船只通行。
Capable of being navigated; deep enough and wide enough to afford passage to vessels.
适航的；可航行的；可操纵的。
Seaworthy; in a navigable state; steerable.
可操纵的；可转向的。
Steerable, dirigible.
易于导航的。
Easy to navigate.
The river is deep enough to be navigable by large cargo ships.
这条河足够深，可供大型货船航行。
After the ice melted, the lake became navigable again for small boats.
冰雪融化后，湖面又可以行船了。
They dredged the channel to keep it navigable throughout the year.
他们疏浚了航道，使其全年保持可通航状态。
The navigable river connects two cities.
这条可通航的河流连接两座城市。
The lake is navigable for small boats.
这个湖可供小船航行。
The river remains navigable all year.
这条河全年保持可通航状态。
Not this
The river is navigate in this season.
Use this
The river is navigable in this season.
navigate 是动词，不能放在 be 动词后作表语。navigable 是形容词，表示“可航行的”，符合 be + adj. 结构。
Not this
This is a navigational river.
Use this
This is a navigable river.
navigational 意为“导航的、与导航有关的”（如 navigational aids），并非“可通航的”；修饰河流表示“可航行”应用 navigable。
Not this
The river is navigated in summer.
Use this
The river is navigable in summer.
is navigated 是被动语态，指“被航行”这一具体动作；要表达“可航行、可通航”这一属性，应使用形容词 navigable。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
可通航的河流
The river is navigable for large ships.
这条河可供大船通航。
可通航的水道
The canal is an important navigable waterway.
这条运河是一条重要的可通航水道。
可通航的航道
Engineers dredged the channel to keep it navigable.
工程师疏浚航道以保持其可通航。
可通航水域
The law protects all navigable waters in the region.
该法律保护该区域内所有可通航水域。
Use navigable naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想navigate（航行）+able（能），河道能通船的就是navigable。
语域：formal 常见场景：航道管理、法律文书、地理描述 该词多用于正式或技术性语境，如航道规划、法律条款或地理描述；日常口语中较少见，通常可用更普通的说法代替。
没有常用词与 navigable /ˈnævɪɡəbəl/ 严格押韵。capable、favorable、readable 与其共享弱读的词尾 -able /əbəl/，但重读音节元音不同，不算押韵。gable、table、cable 只是拼写以 -able 结尾，发音为 /eɪbəl/，其中 gable 与 navigable 的尾部拼写同为 -gable，但读音完全不同，应特别留意。
Dictionary facts from ECDICT, WIKTIONARY.