答案在文末哦~

initial /ɪˈnɪʃl/

adj.

[only before noun] 最初的；开始的；第一的

happening at the beginning; first

an initial payment of £60 and ten instalments of £25

60英镑的首期付款加十次25英镑的分期付款

in the initial stages (= at the beginning) of the campaign

运动的最初阶段

My initial reaction was to decline the offer.

我最初的反应是要婉言谢绝这个提议。

noun

1

[C] （名字的）首字母

the first letter of a person's first name

‘What initial is it, Mrs Owen?’ ‘It's J, J for Jane.’

“首字母是什么，欧文太太？”“是J，Jane的J。”

2

initials

[pl.] （全名的）首字母

the first letters of all of a person's names

John Fitzgerald Kennedy was often known by his initials JFK.

人们常以姓名的首字母JFK称约翰∙菲茨杰拉德∙肯尼迪。

Just write your initials.

写下你的姓名首字母即可。

verb

[VN] 用姓名的首字母作标记（或签名）于

to mark or sign sth with your initials

Please initial each page and sign in the space provided.

请在每一页上用姓名的首字母签署并在规定的空白处签字。

答案来了：initial D（D指drift：漂移）

AE86上山了！