The farmer replaced the worn plough irons before the spring planting.

Despite the weather warnings, the convoy decided to plough ahead with the relief mission.

Despite the warnings, she ploughed ahead with the project and accepted the consequences.

Despite repeated warnings from her colleagues, she kept ploughing ahead with the research, determined to publish her findings by spring.

When facing pressure from colleagues, one may choose to plough one's own furrow and pursue a different approach.

If one is going to complete this ambitious project, one must put one's hand to the plough and start working now.

The museum's new exhibit displayed rare ploughshare bones that offered clues about the animal's diet.

During the anatomy lecture, she pointed to the ploughshare bone while explaining the nasal septum.

Conservationists set up a protected reserve to save the critically endangered ploughshare tortoise.

Conservationists are racing to protect the remaining ploughshare tortoises before habitat loss wipes them out.