Swallowtail
n. 燕尾, 燕尾服, 燕尾叉形旗子的末端
🗣️ 情景例句
Make a right at the stop sign.
就在停车再开标志那里向右拐。
Where the water is shallow, no vessel will ride.
水浅无船行。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？