“nail down”造句，怎麼用nail down造句

American colleges try to help high school graduates nail down a specific career path and explore their interests and life purposes.

Signing the contract will nail down our agreement.

Scientists say they'll next try to nail down whether macaque lead levels are indeed predictive of lead poisoning in humans.

The investment side of ROI can be easier to nail down than the return, as it boils down to what it costs to build and maintain the software product.

So some people may be trying to save face because they didn't nail down the resources they should have nailed down.

Will you nail down that loose board in the floor?