这种气体发出一种难闻的气味。

The gas gives off an unpleasant smell.

youdao

这屋子里散发出一种难闻的气味。

There is an unpleasant smell from this room.

youdao

这种材料燃烧时发出一种难闻的气味。

When this material burns, it flings off a nasty smell.

youdao

这种气体有一种难闻的气味。

The gas gave off an unpleasant smell.

youdao

这种气体有一种难闻的气味。

Thee gas gave off an unpleasant smell.

youdao

这不是一种难闻的气味。

It's not an unpleasant smell.

youdao

这不是一种难闻的气味。

It's not an unpleasant smell.

youdao