Arced
vi. 形成拱状物（arc的过去式与过去分词形式）
✅ 同义词
🗣️ 情景例句
When you read, read as loudly as possible, as clearly as possible and as quickly as possible.
当你读的时候，要尽量大声、尽量清晰和尽量快速。
Mountain-climbing is difficult.
登山是困难的事。
I wonder why!
我很想知道为什么。