选择性颈部照对的英文：
ENI, elective neck irradiation

eni是什么意思：
1.=Equivalent Noise Input 等效噪音输入
elective是什么意思：
a. 选举的,根据选举的,选任的
n. 选修课程

This is a direct election.
这是直接选举。

He was unanimously elected as President.
人们一致选举他当总统。

The elections were free and fair.
选举是自由公正的。

neck是什么意思：
n. 脖子；衣领；狭长地带
v. 搂住脖子亲吻

The horses were running neck and neck.
这些马跑得不分上下。

Jack is neck and neck with Tom in the race.
杰克和汤姆在比赛中齐头并进。

It is a neck and neck horse race right down to the wire
这次跑马赛从头到尾都胜败难分。