obstacle

"My friend told me there was something in the box, but I didn't know what it was yet. "

"Heavy traffic often impedes my commute to work, making me late. "

"I got a letter from my brother."

"Keep a firm hold on the handlebars."

"My sister brought several books to the library, and that one is about dinosaurs. "

"The bee population in our local park is declining, impacting the pollination of the flowers. "

"The student translated the Spanish poem into English. "

"After a long day of hiking, the tired man was grateful for a short stands to rest his legs. "

"The student carefully read the manual for the new computer program. "

"The teacher patiently explained the math problem, and the students were able to understand the steps involved. "

"Testing for the new antidote is currently in progress."

"to live poorly"