She stood there a few seconds more, trying to regain her composure and return to her serious stare. But this second time the stare was even more strained, and she couldn't hold it as long, but burst into laughter again and ran back to join the other students.
她又還在那兒站了幾秒鐘，想要重整旗鼓，恢復兇狠的瞪視，但這回更不行了，她撐不了多久，就再度笑出聲來，跑回同學堆裡去了。