When a river, a canal, or a lake is navigable, ships and boats can travel on it. The water is deep enough and wide enough, and nothing in the way will stop a ship.

When a river, a canal, or a lake is navigable當一條河、一條運河，或一座湖是navigable（可通航）的時候 , ships and boats can travel on it，船隻可以在上面行駛。 The water is deep enough and wide enough水域夠深也夠寬 , and nothing in the way will stop a ship，而且沿途沒有東西會擋住船。

Map makers, port news, and river workers use this word. It is a little formal; friends do not say it when they talk about a day on a boat.

Map makers, port news, and river workers製圖師、港口新聞和河運工作者 use this word會用這個字。 It is a little formal這個字有點正式 ; friends do not say it；朋友之間不會用它 when they talk about a day on a boat來聊某天出去坐船玩的事。

A thin mountain stream is not navigable. A wide, deep river usually is, at least where big boats go.

A thin mountain stream一條細細的山溪 is not navigable是not navigable（無法通航）的。 A wide, deep river一條又寬又深的河 usually is通常就是navigable的 , at least where big boats go，至少在大船會經過的那一段是這樣。

Though actually, people now also call a website or a menu navigable when you can find your way around it easily. That later use is about moving through a page, not through water. The first meaning — and the one this word still carries most strongly — is about water that ships can use.

Though actually不過其實 , people now also call a website or a menu navigable，現在人們也會把一個網站或選單叫做navigable when you can find your way around it easily當你可以很輕鬆地在裡面找到方向的時候。 That later use is about moving through a page這個後來的用法講的是在頁面裡移動 , not through water，不是在水裡。 The first meaning最原始的意思 — and the one this word still carries most strongly ———也是這個字現在依然最重的意思—— is about water that ships can use講的是船隻可以使用的水域。