500. in particular (=especially) 特別是,尤其

499. (be) particular about 講究,挑剔(吃,穿)

498. participate in (=take part in)參加

497. part with (=give up, sell) 舍棄,賣掉

496. go to great pains=take pains 下功夫,努力

495. keep pace with 跟…齊步前進

494. of one’s own某人自己的

493. on one’s own (=along, without help)單獨

492. owe…to 把…歸于…

491. on the outskirts (of) 在城郊