at dusk什么意思、怎么读？单词用法、记忆法、发音音标、反义词辨析、词语翻译、例句造句

at dusk 音标：[æt dʌsk]

黄昏时刻

The library is closed to the public at dusk each day.

图书馆每天黄昏时刻停止开放。

I happened to be upstairs at dusk when the window was open.

我正好在楼上黄昏，当窗口被打开。