我们可以在同一台电脑上运行多个虚拟机来测试不同的操作系统。

We can run multiple ___VMs on the same computer to test different operating systems.

所有渔船都必须配备船舶监控系统，以便于海洋监管部门进行跟踪。

All fishing vessels must be equipped with ___VMS for maritime authorities to monitor their movements.

如果你打不通我的电话，可以在语音信箱留言。

If you can't reach me by phone, you can leave a message on the ___voicemail.