House martin
n. 家燕
🧩 词语组成解析
house
[haʊs]
n. 房屋;全家人;（从事某种生意的）公司;（英国）下议院;
v. 给…提供住房;收藏;安置;
n. 马丁, 圣马丁鸟
🗣️ 情景例句
or we won't be finished by dinnertime.
要不然， 晚餐时间到了我们还做不完。
Don't worry.
不要担心。
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。