Drills
n. 操练；斜纹布；钻头（drill的复数）
🗣️ 情景例句
Dr. Tyler's office. Good morning.
早上好，泰勒医务所。
A fault confessed is half redressed.
承认错误，等于改正一半。
The slope averages about 1 in 30, but contains steep,
坡度平均约为1/30，但其中包括陡峭的，