2 sentences

1. 空军力量薄弱。

   kōng​jūn lì​liang bó​ruò.

   The air force is weak.

   Source: OpenSubtitles

2. 他在数学方面的基础比较薄弱。

   tā zài shù​xué fāng​miàn de jī​chǔ bǐ​jiào bó​ruò.

   His foundation in mathematics is relatively weak.

   Source: Dong Chinese Dictionary