Allan Nelson, the facilities manager, warns that overenthusiastic “Rackers” would try to go swimming in them.

设备部经理Allan Nelson提醒说，留喷泉，可能就会有些超级热情的公司员工跳进去一游为快。

Oh, and whatever happens, don't get too overenthusiastic.

不管发生什么 都不太猴急。

Janine had been overenthusiastic, which sometimes has the force of a denial.

珍妮过于热情，这有时会带有否认的意。

If they get overenthusiastic the immune system can start causing collateral damage – attacking healthy cells.

如果他们过于热情，免疫系统就会开始造成附带损害——攻击健康细胞。