to support opposing parties to gain advantage
支持对立方以获得优势 (zhīchí duìlì fāng yǐ huòqǔ yōushì)
"Some lobbyists are known to play both sides of the issue."
"一些游说者以支持问题的两方而闻名。" (yīxiē yóushuì zhě yǐ zhīchí wèntí de liǎng fāng ér wénmíng)
to join something that is already popular or successful
to become very angry
Something that is easy and without difficulty.
to be very expensive
Take your time and don't hurry.
Continue striving; don’t give up.
