current rate的用法和樣例：
例句
- Labor productivity is calculated by added value at current price.
社會勞動生產率按現價增加值計算。 - "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
"科幻小說不能簡單地看成是供消遣的，而實際上它給讀者展示更深刻的內容。" - A low rate is enough to prevent flushing of reductants.
緩慢的流速足以防止還原劑的散失。 - The current slowed abruptly, and he began again to take care lest the waves swamp him.
河水的流速驟然減了下來，他又開始瞟著上面打來的浪頭。
