to begin something cheerful or lively, such as a smile or conversation
开始一些愉快或生动的事情，如微笑或对话 (kaishi yixie yukuai huo shengdong de shiqing, ru weixiao huo duihua)
"He sparked up a smile as soon as he saw her."
"他一看到她就sparked up了微笑。" (ta yi kan dao ta jiu spark up le weixiao)
to contribute ideas or suggestions in teamwork
to result in or cause something to happen later
to become a member of a sports team or group
to keep emotions inside without expressing them
to allow yourself to take a break and relax
to have no more time to complete something
