Isu
abbr. 整体式瞄准镜装置（Itegrated Sight-Unit）；国际滑冰联盟（International Skating Union）
🗣️ 情景例句
for reading to the kids in the hospital.
为住院的孩子朗读。
Congratulations on your success.
恭喜你成功。
Oh, look! It's high!
快看，多高呀！