Etymologic
a. 词源的, 词源学的
🗣️ 情景例句
How big is your family?
你家有几口人？
We'll start with an orientation video. It runs about 15 minutes.
我们将从一个电视简报开始，大概放15分钟。
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。