| 1 | 感染 | 感染 | gǎn rǎn | gan3 ran3 | infection; to infect; to influence | | |
| 2 | 污染 | 污染 | wū rǎn | wu1 ran3 | pollution; contamination; Classifiers: 个 | | |
| 3 | 染色体 | 染色體 | rǎn sè tǐ | ran3 se4 ti3 | chromosome | | |
| 4 | 染 | 染 | rǎn | ran3 | to dye; to catch (a disease); to acquire (bad habits etc); to contaminate; to add color washes to a painting | | |
| 5 | 传染病 | 傳染病 | chuán rǎn bìng | chuan2 ran3 bing4 | infectious disease; contagious disease; pestilence | | |
| 6 | 染色 | 染色 | rǎn sè | ran3 se4 | dye | | |
| 7 | 传染 | 傳染 | chuán rǎn | chuan2 ran3 | to infect; contagious | | |
| 8 | 环境污染 | 環境污染 | huán jìng wū rǎn | huan2 jing4 wu1 ran3 | environmental pollution | | |
| 9 | 感染力 | 感染力 | gǎn rǎn lì | gan3 ran3 li4 | inspiration; infectious (enthusiasm) | | |
| 10 | 渲染 | 渲染 | xuàn rǎn | xuan4 ran3 | rendering (computing); to add washes of ink or color to a drawing (Chinese painting); to exaggerate; to embellish | | |
| 11 | 污染物 | 污染物 | wū rǎn wù | wu1 ran3 wu4 | pollutant | | |
| 12 | 染料 | 染料 | rǎn liào | ran3 liao4 | dye | | |
| 13 | 染上 | 染上 | rǎn shàng | ran3 shang4 | to catch (a disease); to get (a bad habit) | | |
| 14 | 放射性污染 | 放射性污染 | fàng shè xìng wū rǎn | fang4 she4 xing4 wu1 ran3 | radioactive contamination | | |
| 15 | 二次感染 | 二次感染 | èr cì gǎn rǎn | er4 ci4 gan3 ran3 | secondary infection (medicine) | | |
| 16 | 飞沫传染 | 飛沫傳染 | fēi mò chuán rǎn | fei1 mo4 chuan2 ran3 | droplet infection (disease transmission from sneezing, coughing etc) | | |
| 17 | 大气污染 | 大氣污染 | dà qì wū rǎn | da4 qi4 wu1 ran3 | air pollution; atmospheric pollution | | |
| 18 | 翠而不染 | 翠而不染 | cuì ér bù rǎn | cui4 er2 bu4 ran3 | pure and unadulterated (idiom) | | |
| 19 | 传染源 | 傳染源 | chuán rǎn yuán | chuan2 ran3 yuan2 | source of an infection | | |
| 20 | 传染性 | 傳染性 | chuán rǎn xìng | chuan2 ran3 xing4 | infectious; epidemic | | |
| 21 | 除沾染 | 除沾染 | chú zhān rǎn | chu2 zhan1 ran3 | decontamination | | |
| 22 | 出淤泥而不染 | 出淤泥而不染 | chū yū ní ér bù rǎn | chu1 yu1 ni2 er2 bu4 ran3 | lit. to grow out of the mud unsullied (idiom); fig. to be principled and incorruptible | | |
| 23 | 常染色体 | 常染色體 | cháng rǎn sè tǐ | chang2 ran3 se4 ti3 | autosomal chromosome; autosome; autosomal | | |
| 24 | 残余沾染 | 殘餘沾染 | cán yú zhān rǎn | can2 yu2 zhan1 ran3 | residual contamination | | |
| 25 | 沾染习气 | 沾染習氣 | zhān rǎn xí qì | zhan1 ran3 xi2 qi4 | to be tainted with unhealthy habits (idiom) | | |