Upriver
a. 上游的, 向水源的
✅ 同义词
🔴 反义词
🗣️ 情景例句
She just said it's too easy.
她仅仅说它太容易了。
He has been to America.
他曾去过美国。[表示曾经有过的经验]
Have they ever been there before?
他们以前去过那儿吗？