那名军官擅离职守。

The officer deserted his post.

他因擅离职守受到了军法审判。

He was court-martialled for desertion.

“美国不在未经许可擅离职守。”她说。

'The US is no longer absent without leave', she said.

擅离职守或者玩忽职守，致使军事设施遭受破坏或者造成其他后果的。

Leaving post without permission or committing dereliction that causes damage to military installations or other consequences.

其总裁清水正孝被谴责在这个危机时刻病倒(有些说是擅离职守)，公司至今还未给出其缺席原因。

Its President, Masataka Shimizu, is being lambasted for falling ill (some say going AWOL) during the emergency; the company has yet to explain his absence.