| 起伏HSK 6 | qǐ fú | to move up and down; to undulate; ups and downs | |
| 埋伏HSK 6 | mái fú | to ambush; to lie in wait for; to lie low; ambush | |
| 潜伏 | qián fú | to hide; to cover up; to conceal | |
| 此起彼伏 | cǐ qǐ bǐ fú | up here, down there (idiom); to rise and fall in succession; no sooner one subsides, the next arises; repeating continuously; occurring again and again (of applause, fires, waves, protests, conflicts, uprisings etc) | |
| 伏兵 | fú bīng | hidden troops; ambush |
| 1 | They have to lurk. | |
| 2 | Solar panels can generate electricity. | |
| 3 | The plot of this novel is very exciting. | |
| 4 | There are always ups and downs in life. | |
| 5 | He had ups and downs in his speech, keeping people's emotions at a high level all the time. |