The holes were sufficiently large to serve as nests.是什么意思？

The holes were sufficiently large to serve as nests.

这些洞作鸟巢足够大。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

holes

n. 洞( hole的名词复数 )，球洞，破洞，洞穴；

例句
The air was fresh, courtesy of three holes in the roof...
房顶有3个洞，所以空气很清新。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

sufficiently

adv. 足够地，充分地，十分，相当；

例句
The limestone is sufficiently fissured for tree roots to have breached the roof of the cave...
石灰岩上有许多缝隙，故而树根能从岩洞顶部长出来。

large

adv. 大大地，夸大地，详细地，顺风地；adj. 大的，大规模的，大型号的，广泛的；v. 玩个痛快，（尤指跳舞和饮酒）作乐；

例句
The banks would be forced to absorb large losses...
银行将被迫承受巨大的损失。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

serve

vt.& vi. （为…）服务，任（职），提供，端上；vt. 招待，（为…）工作，对…有用，向…供应；vi. 适合，服役，供职，[网球、羽毛球]发球；n. 网球等发球，发球权，所发的球；

例句
Heat the curry thoroughly and serve it on a bed of rice.
把咖喱热透后浇在米饭上。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

nests

n. （鸟）窝( nest的名词复数 )，温床，（套叠在一起的）一套物件，藏匿处；v. 筑巢( nest的第三人称单数 )；

例句
The birds returned to their nests and continued to incubate the eggs.
鸟儿回到巢里继续孵卵。