1.explain 2.speak.It says real mastery of word.So we should pick up explan in the fist one cause 'hear' is so superficial and the second answer should be 'speak' cause it says with understanding, which means everybody should figure out what we wanna say.
Often times, the actual object is much more expensive to create. That's why many designers and engineers create a model to represent their ideas to a group. The model is much cheaper and faster to create, especially if it needs tweaking multiple times. Also, that model can have working parts - you could take it apart to show the inside/cross-section or have interactive sections that allow easier presentation of your idea. Those are things you can't accomplish with an actual object.
Answer:
Sacred
Explanation:
Something sacred is considered holy Devoted to a religious ceremony or simply worthy of awe and respect
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God willing
