Knottier
a. （指木材）多结节的( knotty的比较级 ); 多节瘤的; 困难的; 棘手的
🗣️ 情景例句
He's not making much progress with his English.
他的英语进步不大。
Slowly, mountains are worn away by the wind.
山体逐渐被风化了。
They also found out that bees fly a maximum distance of 3.2 kilometres between their hive and a feeding place.
他们还发现蜜蜂从蜂箱到喂食点的最大飞行距离是3。2公里。