to find something by accident
偶然发现某物 (ǒurán fāxiàn mǒuwù)
"We stumbled upon a hidden waterfall in the forest."
"我们在森林中偶然发现了一座隐藏的瀑布。" (Wǒmen zài sēnlín zhōng ǒurán fāxiànle yī zuò yǐncáng de pùbù)
to hope something unpleasant would disappear or never happen
to relax by doing something calming
to interrupt someone while they are speaking
to become so excited that you lose control of your feelings...
to take measures to defend from threats or attacks
to read something carefully from beginning to end
