Entomology's okay for giving you upper and lower limits within five to seven days, but beyond that, entomology's not helpful.

“昆虫学时间上下限为5到7天，但是除此之外，昆虫学用处不大。”

In phase 1 trials, a small group of individuals on the order of a few dozen are picked to establish a candidate vaccine safety, such as side effects as well as the upper and lower limits for vaccine doses.

在I期临床试验中，大约十几人经挑选后构成一组，用于确定候选疫苗的安全性，如副作用以及疫苗有效剂量区间等。