For anyone who's been very sick before, the actual experience of being sick as itself incredibly isolating.

生过病的人应该都有体会——生病的体验本身就特别难为外人道。

But experts say that trees can start looking sick before any sign of " Bell-miner Associated Die-back" .

但是，专家说在树有任何" Bell-miner Associated Die-back（矿吸蜜鸟相关树病）" 的症状之前，它会先看起来很虚弱。

Ruburt almost saw your sick friend's clasped hands, during psychological time just before falling asleep the other evening.By all means keep up these experiments, and one night we shall set a session aside to explain them.

鲁伯在那天晚上睡觉前的心理时间里，几乎看到了你们那位生病的朋友紧握的双手。不管怎样，尽量继续)做这些实验，改天晚上我们会留出一节课来解释它们。