current speed的用法和樣例：
例句
- The maximum current speed and SSC occour during spring ebb, and the minimum one occours during neap flood.
最大流速和含沙量都發生在大潮落潮，最小流速和含沙量都發生在小潮漲潮。 - 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。
