The pseudotracheae secrete enzyme-filled saliva and soak up fluids and dissolved foods by capillary action.

拟气通过毛用来分泌充满酶的唾液渗入它们的食物。

Capillary action is going to be movement of a liquid up a tube.

毛用是液体向上移动到子。

In fact, without the limitations of gravity on capillary action, directing liquids through these micro-structures could be extremely efficient.

事实上， 如果没有重力对毛用的限制，引导液体通过这些微结构可常有效。

Trees use capillary action to draw water up from the roots in tiny tubes – a process that depends on the way water molecules stick to themselves and their surroundings due to surface tension.

树木利用毛用将水从中的根部吸上来——这一过程取决于水分子由于表面张力而粘附在自身及其周围环境的方式。