Moats
n. （古时城堡为了防御而在四周挖的）壕沟, 护城河( moat的复数形式 ); （现代动物园为防止动物逃跑而在场地四周挖的）深沟
🗣️ 情景例句
It was a gradual process, involving many factors.
这是个渐进的过程，涉及到方方面面。
Don't forget to write your return address on the letter.
不要忘记在信封上写你的回邮地址。
Mrs.Sawyer stays at home every day.She does the housework.
索耶夫人每天呆在家里。她料理家务。