Such guards also protect against fraying by roe deer.是什么意思？

Such guards also protect against fraying by roe deer.

这种保护措施还可防止獐鹿摩擦损伤.

such

det. 这样的，那样的，如此，这样；

例句
...abstract principles such as justice...
正义等抽象原则

guards

n. 卫兵( guard的名词复数 )，警戒，警卫队，防护装置；v. 保护，控制( guard的第三人称单数 )；

例句
...the bright uniforms of the guards parading at Buckingham Palace.
参加白金汉宫阅兵式的卫兵们色彩鲜艳的制服

also

adv. 也，同样，并且；conj. 另外；

例句
The media have also abetted the feeling of unreality.
媒体也在一旁对这种非现实感推波助澜。

protect

vt. 保护，保卫，贸易保护，备款以支付；

例句
It has been claimed that wine helps protect against heart disease.
有人声称葡萄酒有助于预防心脏病。

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

fraying

v. （使布、绳等）磨损，磨破( fray的现在分词 )；

例句
There are signs that the alliance is now fraying at the edges...
有迹象表明该联盟现正分崩离析。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

roe

n. 獐，獐鹿，鱼卵，鱼精液；

例句
John Doe was appointed postmaster vice Richard Roe retired.
约翰·多伊被任命为邮政局长,取代退休的理查德·罗.

deer

n. 鹿；

例句
...the three red deer stags browsing 50 yards from my lodge on the fringes of the forest.
在距我的小屋50码远的森林边缘吃草的3只牡赤鹿