Tril
n. [计]下三角阵（商业数学软件MATLAB的常用命令之一）
🗣️ 情景例句
What are you afraid of?
你怕什么
Better be the head of a dog than the tail of a lion.
宁为犬首，不作狮尾。
It's Tree Planting Day. We're going to plant trees in the park along the lake.
明天是植树节。我们要去公园/沿着湖边种树。