to completely remove unwanted things from a place
完全清除一个地方的不需要的事物 (wánquán qīngchú yī gè dìfāng de bù xūyào de shìwù)
"Volunteers worked to clean out the polluted river."
"志愿者们努力清理污染的河流。" (zhì yuàn zhě men nǔ lì qīng lǐ wū rǎn de hé liú)
to support or defend someone’s ideas or opinions
to rely or depend on someone
to lead or motivate creative progress
to concentrate on your inner thoughts and emotions
to become friends again after an argument
to increase your effort toward gaining knowledge