例: She recovered sufficiently to accompany Chou on his tour of Africa in 1964.
她当时已经康复,可以在周1964年的非洲之旅中伴随他。
例: 300,000 years after the Big Bang, the Universe had cooled sufficiently for protons and electrons to combine into neutral hydrogen atoms.
宇宙大爆炸30万年后得到充分冷却,质子和电子结合形成中性氢原子。