环保

环 huán HSK 3 #3,737

ring; loop; hoop / to surround; link

环境 huánjìng HSK 3 #1,960

environment; surroundings / conditions; circumstances

保护 bǎohù HSK 3 #471

to protect / to safeguard / protection

保存 bǎocún HSK 3 #3,625

to preserve / to keep / to save (a file)

保留 bǎoliú HSK 3 #2,605

to retain / to keep / to reserve

保 bǎo HSK 3 #2,195

to protect / to keep / to guarantee

保安 bǎo'ān HSK 3 #1,911

security guard / public safety

保险 bǎoxiǎn HSK 3 #1,570

insurance / safe / secure

确保 quèbǎo HSK 3 #1,502

to ensure / to guarantee; to make sure

保持 bǎochí HSK 3 #628

to keep / to maintain / to preserve