Ninja
n. （受过偷窃技术专门训练被雇作间谍或刺客的）日本武士
🗣️ 情景例句
Do you have any coupons?
你们有优惠卡吗？
No practice, no gain in one's wit.
吃一堑，长一智。
Officials from Greenwich Observatory have the clock checked twice a day.
格林尼治天文台的官员们每天两次派人矫正此钟。