在近700个品种的竹子中，有的最多长到不到一公尺，而有的能在24小时内长到三英尺。
Among almost seven hundred species of banboo,some are full grow at less than a foot high,while others can grow three feet in teenty-four hours.
在开始航行之前，谨慎的航海员要学习航海图、船帆运动的方向、灯塔的位置，这让他们对可能遇到状况做好准备。
Before staring on a sea voyage,prudent navigators learn the sea charts,study the sailing directions,and memorize lightouse locations to prepare thenselves for any conditions they might encounter.
在所有重要的经济作物中，棕榈叶得到的研究最少
Of all the economically important plants,palms have been the least studided.
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