to be knowledgeable or skilled about something
estar bien informado o ser hábil en algo (estar bien informado o ser hábil en algo)
"You can tell she really knows her stuff about physics."
"Puedes decir que ella realmente sabe lo suyo sobre física." (Pwe-des de-sir ke e-ya riel-men-te sa-be lo su-yo so-bre fí-si-ka)
a feeling of nervous excitement or anxiety
to waste more money on something that has already failed
to be extremely happy
to delay doing something
to be the best or most impressive thing in a situation
To share the cost of something equally.