n. 学习,研究;课题;书房;结论;
vi. 考虑;沉思;默想;努力;
vt. 想出;详细地检查;背诵(台词等);为…费心思;
🗣️ 情景例句
Thanks.
谢谢。
A little spark kindles a great fire.
星星之火,可以燎原。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.