當(dāng)她在桌前坐下時(shí),卻發(fā)現(xiàn)自己不知道該說(shuō)些什么了。When she sat down at her desk she found that the words evaded her.坐下時(shí)我的腿還會(huì)痛。My leg still aches when I sit down.他的滑雪板交叉在一起坐下時(shí),姿勢(shì)很不雅觀.His skis crossed and he sat down in a most undignified manner....