美国税务局手段如此强硬，背后的依靠是什么？#美国 #IRS

Technology Explained ⚙️ on Instagram: "Follow @explaining.tech to learn everything about technology one post at a time 🧠⚙️ A clogged toilet is a simple problem with surprisingly precise, physics-based solutions that rely on pressure and mechanical force, not magic. The most effective and common method uses a plunger, but the engineering is often misunderstood. A plunger isn’t meant to push the clog down; it’s designed to create a tight seal and use the standing water to generate a powerful hydr