出煤量
An early English measure of land area of varying value, often equal to about30 acres(12 hectares). 威尔格英格兰早期对不同价值的土地面积的丈量法，常相当于30亩(12公倾)
The reservoir keeps flood from400000 hectares of land. 这个水库使40用项的土地免除了水灾的威胁。
The refugees were at sea for forty days before reaching land. 这些难民在海上漂泊了40天后，他们的船才靠岸。
Mr Hill rents this land (out) to us at 500 a year. 希尔先生把这块地租给我们，租金每年500英镑。
