捏一把汗

zá jì yǎn yuán biǎo yǎn zǒu gāng sī shí guān zhòng dōu tì tā niē yī bǎ hàn

杂技演员表演走钢丝时，观众都替他捏一把汗。

The audience were breathless as they watched the acrobat walking the tightrope.

kàn zhe tā wǎng xuán yá shang pá dà jiā dōu niē yī bǎ hàn

看着他往悬崖上爬，大家都捏一把汗。

Watching him climb up the precipice, everybody was breathless with anxiety.