| 一一对应 | yi1 yi1 dui4 ying4 | one-to-one correspondence |
| 一一映射 | yi1 yi1 ying4 she4 | one-to-one correspondence |
| 一个幽灵在欧洲游荡 | yi1 ge4 you1 ling2 zai4 ou1 zhou1 you2 dang4 | Ein Gespenst geht um in Europa. |
| 一多对应 | yi1 duo1 dui4 ying4 | one-to-many correspondence |
| 一字倒吊 | yi1 zi4 dao3 diao4 | orangespot surgeonfish |
| 一步登天 | yi1 bu4 deng1 tian1 | reaching heaven in a single bound (idiom) |
| 不可靠的 | bu4 ke3 kao4 de5 | fluky |
| 不断攀升 | bu4 duan4 pan1 sheng1 | to rise without respite |
| 不考虑 | bu4 kao3 lv4 | Dismiss |
| 不遑多让 | bu4 huang2 duo1 rang4 | not outdone by |
| 中转柜台 | zhong1 zhuan3 gui4 tai2 | transfer desk |
| 乙种粒子 | yi3 zhong3 li4 zi3 | beta particle (electron, esp. high speed electron emitted by radioactive nucleus) |
| 乱开车 | luan4 kai1 che1 | to drive a car irresponsibly |