Optic aura
[医] 视觉先兆
🧩 词语组成解析
optic
['ɔptik]
adj. 眼睛的，视觉的;光学的;镜片;
aura
['ɔ:rə]
n. 气味;光环;气氛;[医]（中风等的）预兆;
🗣️ 情景例句
Where are you going during Summer vacation?
暑假你打算去哪儿？
She's a beautiful girl, don't you think so?
她是美丽的女孩，你不觉得吗？
and near its lower reaches there is a long tailing-off which is almost certainly the result of material transported out to deep water after being eroded from the continental masses.
在这个地带的低处是很长的一段尾沙地段，基本上可以断定这个地段是大陆块体上侵蚀下来的物质被水冲到深水处形成的。