sub

I bought a fresh sub roll for my sandwich.

我买了一个新鲜的潜艇面包卷做三明治。

I ordered a turkey sub for lunch.

我午餐点了一个火鸡潜艇三明治。

There's a great sub shop on the corner.

街角有一家很棒的潜艇三明治店。

The navy has a new nuclear sub.

海军有一艘新的核潜艇。

The sub crew trained for months.

潜艇船员训练了几个月。

An attack sub can stay submerged for weeks.

攻击型潜艇可以潜航数周。

The coach decided to sub in a fresh player for the second half.

教练决定在下半场换上一名新球员。

They subbed out the injured pitcher in the third inning.

他们在第三局换下了受伤的投手。

I'll sub for you at the meeting if you're sick.

如果你生病了，我会代替你参加会议。