focus of的用法和樣例：
例句
- The point of the earth's surface directly above the focus of an earthquake.
震中地震中位于震源正上方地球表面上的點(diǎn) - Her beauty makes her the focus of attention.
她長(cháng)得漂亮，很惹人注目。 - A central point or focus of bacterial growth in a living organism.
滋生的地方，生長(cháng)處在活的有機物中細菌滋長(cháng)的中心點(diǎn)或聚集地 - He always wants to be the focus of attention.
他總想成為注意力的焦點(diǎn)。
