Concepts
n. 概念, 观念；思想（concept复数形式）
🗣️ 情景例句
I am sure. So, we'll be expecting the first shipment in less than a month.
那当然。我们都希望第一批货在一个月之内可以装船。
To navigate
航海
Once there was an old tiger.
从前有一只年迈的老虎。