Preventiveness
n. 预防药；预防法 (preventive的变形)
🗣️ 情景例句
That's right.
你完全正确。
The little boy left home for his first day at school.
那个小孩第一天离开家去上学。
I assure you that you will feel no pain at all.
我保证你根本不会觉得疼的。