keep the tail in the water

• 发达；兴隆

keep the tail in the water的用法和样例：

例句

1. He developed the muscles in the legs by running.
   他藉着跑步使腿部的肌肉发达了。
2. Nothing is good but in its season.
   物不逢时难发达。
3. The real estate business is thriving.
   房地产生意兴隆。
4. I'm sure the new agency will be a great success.
   我相信，新公司定能兴隆昌盛。