ˌto and ˈfrobackwards and forwards往返地；来回地She rocked the baby to and fro.她来回摇动着婴儿。to and froback and forth 来回地 * I saw him walking to and fro in his room at that time. 我看见他那时在房间里来回踱着步。to and fro往复地;来回地：Our old scholar likes quietness，he often walks to and fro in his little room all day long without going out.我们的老学者喜好安静，他常常整天小屋里来回地走来走去，从不出来。 |