Another, less decorative solution for preventing evaporation is to top the planters with mulch or simply cover them with a lid.
另一种不那么美观的防止水分蒸发的方法是在花盆上部铺上互根，或者就用个盖子盖上。
All cups have a lid which only opens when the cup reaches the measuring position, preventing loss of sample through evaporation.
所有的杯子都带有盖子，并且盖子只能在杯子放置到测量位置时才能打开，防止样品蒸发。
All cups have a lid which only opens when the cup reaches the measuring position, preventing loss of sample through evaporation.
所有的杯子都带有盖子，并且盖子只能在杯子放置到测量位置时才能打开，防止样品蒸发。
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