fallow

名词 fallow:

1. cultivated land that is not seeded for one or more growing seasons

形容词 fallow:

1. left unplowed and unseeded during a growing season
2. undeveloped but potentially useful

1. The field was lying fallow.
   那田地正在休耕中。
2. Summer fallow is the best method of destroying weeds.
   夏季休耕是消灭杂草的最好办法。
3. At this very moment there are probably important inventions lying fallow.
   就在目前这个时刻，说不定还有一些重要的创造发明尚未发挥作用。
4. The farmer decided to leave the land fallow for a year.
   农夫决定让土地休耕一年。

fal.low

adj.（形容词）
Plowed but left unseeded during a growing season:
休耕中的：在生长季节耕而不种的：
例句：
fallow farmland.
休闲农田

Characterized by inactivity:
闲置：
例句：
a fallow gold market.
闲置的黄金市场

n.（名词）
Land left unseeded during a growing season.
休耕地：播种季节的休种地
The act of plowing land and leaving it unseeded.
休耕：犁而不种的行为
The condition or period of being unseeded.
休耕期：休种状态或时期
v.tr.（及物动词）
fal.lowed,fal.low.ing,fal.lows
To plow (land) without seeding it afterward.
使休耕：犁地后而不撒种
To plow and till (land), especially to eradicate or reduce weeds.
（为了除草而）犁地：耕、耙（土地）以便消灭或减少杂草

来源：
Middle English falow
中古英语 falow
from Old English fealh [fallow land]
源自 古英语 fealh [休耕地]

【引伸】
fal.lowness
n.（名词）