Triads
n. 三个一组, 三幅一组, 三和音( triad的复数形式 )
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
Would 1:00 be convenient?
1点钟行吗？
There is a broken small old gray stone bridge over the river.
河上有一座破烂不堪的、古老的、灰色的小石桥。