Firm and not easily bent, cut, or broken

• Resistant to pressure or penetration

坚硬，不易弯曲、切割或折断

• 抗压、难以被穿透

Not easy to do, understand, or solve

• Requiring a lot of effort

不容易做、理解或解决

• 需要大量努力

With great effort, intensity, or force

用很大的努力、强度或力度

Containing alcohol, as of beverages

含酒精的，用于饮品

Severe or harsh in effect or manner

• Difficult to endure

严厉或苛刻

• 难以忍受

Of water, high in dissolved minerals, especially calcium and magnesium

指水：溶解矿物质含量高，尤其是钙和镁

In physical form rather than digital; involving hardware or manual action

实体而非数字；涉及硬件或手动操作

Definite, objective, and verifiable; based on facts rather than opinion

确凿、客观且可核实；基于事实而非观点