1）The case was thrown out of court because of insufficient evidence.
由於證據不足，法庭對此案不予受理。
2）He was tired because he had had insufficient sleep.
由於睡眠不足，他顯得很疲倦。
3）These children were dwarfed by insufficient food.
這些孩子因營養不良而發育不全。
4）The food and drinks were insufficient for the needs of twenty lads.
食物和飲料不夠二十個小夥子吃。
inadequate “不足的”、“不充分的”, adequate的反義詞，不僅僅是數量上，還有質量上不足以滿足或達到基本的要求，或指能力、才能、資歷等沒有達到要求。
1）Many illnesses are the result of inadequate sanitation.
許多疾病都來源於不健全的衛生設施。
2）If increased spending is inadequate, the government can step in to simulate
aggregate demand.
如果消費增加不足，政府就要進行幹預以刺激總需求。
3）I think that his qualification is inadequate for the position.
我認為資歷不足以勝任這個職位。