A " pacifier" is that little plastic piece with the little knob thing, I think.

我认为“奶嘴”是带有小旋钮的小塑料片。

A " blade" (blade) is usually a small rubber or plastic piece that actually touches the window.

“刀片”（blade）通常是实际接触窗户的小橡胶或塑料件。

Sometimes a metal or plastic piece fell off and Holly had to stop, go back and fetch it.

有时金属或塑料件会掉下来， 霍莉不得不停下来， 回去取它。

But except for a plastic piece inside that separates the box from the pizza, the inside pizza, the restaurant says it's totally pie-odegradable.

但除了内部的一块塑料片将盒子与比萨隔开，里面的比萨，餐厅说它完全是可降解的。

And now more and more studies are finding that microplastics, defined as plastic pieces less than 5 millimeters across, are also in our bodies.

现在越来越多的研究发现，微塑料（即直径小于 5 毫米的塑料片）也存在于我们的体内。

They'll either have a sign that tells you how often the elevator buttons are disinfected, or there will be a plastic, piece of sticky plastic, like a plastic sheet over the buttons so it effectively becomes a flat surface.

他们要么有一个标志告诉你电梯按钮多久消毒一次，要么会有一块塑料， 一块粘性塑料，就像按钮上的塑料片一样， 因此它有效地变成了一个平坦的表面。