“单一的”造句

许多理论都标榜以单一的原因解释生长.
Many theories purport to explain growth in terms of a single cause.

所有喇叭都接在单一的扩音器上.
All the speakers hook up to a single amplifier.

单一的 、孤立的磁极从来未找到.
A single, isolated magnetic pole has never been found.