这个问题太复杂了,我们研究了一整个晚上,还是一筹莫展。Zhège wèntí tài fùzá le, wǒmen yánjiūle yī zhěnggè wǎnshang, háishì yīchóumòzhǎn.This problem was too complicated; we studied it for a whole evening and were still at our wits' end.
电脑突然坏了,他折腾了一上午,还是一筹莫展。Diànnǎo tūrán huàile, tā zhēténgle yī shàngwǔ, háishì yīchóumòzhǎn.The computer suddenly broke down; he fiddled with it all morning but could do nothing.
数学题越想越乱,弟弟坐在桌前,一时一筹莫展。Shùxué tí yuè xiǎng yuè luàn, dìdi zuò zài zhuō qián, yīshí yīchóumòzhǎn.The more he thought about the math problem, the more confused he got; the younger brother sat at the desk, momentarily at a loss.