Winston reached down and cautiously scratched his varicose ulcer.是什么意思？

Winston reached down and cautiously scratched his varicose ulcer.

温斯顿把手伸下去,小心翼翼地搔他的脚脖子.

Winston

n. 温斯顿(m.)；

例句
She's asking for trouble, flaunting herself like that. Did you see the way Major Winston was looking at her?
她那么招摇，真是在自找麻烦。看到温斯顿少校看她的样子了吗？

reached

v. 到达( reach的过去式和过去分词 )，联络，伸出手臂，延伸；

例句
When the barge reached the shrine, acolytes removed the pall.
当驳船抵达圣地时，辅祭除去了柩衣。

down

adv. （坐、倒、躺）下，向下，（表示范围或顺序的限度）下至；prep. （从高处）向下，（表示位置）在…的下方，（表示方向）沿着…向下，（表示时间）自…以来；adj. 向下的，沮丧的，计算机或计算机系统停机，（以…）落后于对手的；n. （鸟的）绒羽，绒毛，软毛，汗毛；vt. 放下，（尤指大口或快速地）喝下，使摔倒，击落（敌机等）；vi. [常用于祈使句中]下去，下来，卧倒，下降；

例句
She walked across the floor and lay down on the bed...
她走过地板躺在了床上。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

cautiously

adv. 小心地，谨慎地，小心翼翼，翼

例句
The commission is cautiously favourable to Austrian membership, foreseeing few economic problems.
没有预见到什么经济问题，委员会谨慎地赞同吸收奥地利为会员。

scratched

[体]弃权；

例句
He scratched himself under his arm...
他在胳膊下面挠了挠。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

varicose

adj. （静脉）曲张的，（贝壳）螺层隆起的；

例句
Surgical waiting lists were reduced by the simple expedient of striking off all patients awaiting varicose vein operations...
采取了将所有等待进行静脉曲张手术的病人从名单上删除的简单做法，这一权宜之计使得外科手术等待名单得以缩减。

ulcer

n. <医>溃疡，腐烂物，道德败坏；

例句
The ulcer had been troubling her for several years.
溃疡已经折磨她好几年了。