Preenvelop
預(yù)包絡(luò)
??? 情景例句
Hi, I'm Mary.
嗨，你好，我叫瑪麗。
Purse
皮包
They had to edge their way along this, sometimes wading across shallow streams, or swimming across deep pools.
他們不得不側(cè)著身子往前走，有時(shí)過淺溪，有時(shí)游過深潭。