I-d
[醫][=intensity-duration curve]強度-期間曲線
??? 情景例句
He shows complete indifference to others feelings.
他對別人的感受漠不關心。
We know not what is good until we have lost it.
有的時候不愛惜，失了以后空嘆息。
I can see a sweater.
我看見了一件羊毛衫。