It is dishonorable to shirk military service.

逃避兵是可耻的。

At the age of nineteen he began his duty.

19岁时始服兵。

All 18-year-old males are required to do a year’s military service.

所有18 岁男性公民必须服一年兵。

His bad eyesight exempted him from military service.

视力不好而服兵。

He did a two-year stint in the army when he left school.

离后服兵两年。