5 sentences for 外 (wài — external)

1. 这件事千万不能外扬。

   zhè jiàn shì qiān​wàn bù néng wài yáng.

   This matter must never be made public.

   Source: Dong Chinese Dictionary

2. 这种药水只能外用，不可内服。

   zhè zhǒng yào​shuǐ zhǐ néng wài yòng, bù kě nèi​fú.

   This lotion is for external use only and must not be taken internally.

   Source: Dong Chinese Dictionary

3. 做人应当外圆内方，讲究原则。

   zuò​rén yīng​dāng wài yuán nèi fāng, jiǎng​jiu yuán​zé.

   One should be flexible on the outside but principled on the inside.

   Source: Dong Chinese Dictionary

4. 这件事情关系重大，万万不可外泄。

   zhè jiàn shì​qing guān​xì zhòng​dà, wàn​wàn bù kě wài xiè.

   This is a matter of great importance and must never be leaked.

   Source: Dong Chinese Dictionary

5. 这种药膏只能用于外涂皮肤，千万不能吞服。

   zhè zhǒng yào​gāo zhǐ néng yòng​yú wài tú pí​fū, qiān​wàn bù néng tūn​fú.

   This ointment is for external skin use only; do not swallow it.

   Source: Dong Chinese Dictionary