to choose not to participate
选择不参与 (xuǎnzé bù cānyù)
"Employees can opt out of the program if they want."
"员工可以选择不参加该程序，如果他们愿意的话。" (Yuángōng kěyǐ xuǎnzé bù cānyù gāi chéngxù, rúguǒ tāmen yuànyì dehuà.)
an unidentified but informed source
after a long time; in the end
to have too much work to do
unable to think clearly or remember something
confident and sure of oneself
a family secret that one wants to keep hidden
