Invaders
n. 侵入种；侵略者（invader的复数）
🗣️ 情景例句
Would you please repeat your offer again?
能否再说一遍您的优惠？
Yes, and I took many pictures.
是的，我还照了好多照片。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，