Take the survey along if possible. Certain systems can be tested only underway. This is also the best way to check the status of sails, running rigging, etc.
如果可能的话，把验船师也带上。某些系统只能在航行工作时才能被检验。这也是检查帆船和操纵装置状况的最佳方法。
The only way to know the balance of benefit and harm is a randomized trial, and 2 are currently underway.
唯一能衡量其利弊的是通过随机对照实验，有2个实验正在进行中。
The only way to know the balance of benefit and harm is a randomized trial, and 2 are currently underway.
唯一能衡量其利弊的是通过随机对照实验，有2个实验正在进行中。
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