单语范例（未经PONS编辑处理）
Stems are stiff, erect, up to 30 tall.
en.wikipedia.org We just don't get wound up with dusting down the wedding crystal, polishing the silver cruet and sending stiff white invitations.
blogs.telegraph.co.uk It is made from silk cloth so stiff that the obi does not need lining or sewn-in stiffeners.
en.wikipedia.org Platforms of his election program included a stiff defense of national interests, and 100 euro monthly support of the families with children.
en.wikipedia.org It has been used as stiff lightweight structural material, specifically for support of reflecting telescope mirrors.
en.wikipedia.org