by lack of：因缺乏...,因沒有

by intention%[]%故意% | by lack of%[]%因缺乏...,因沒有...% | by leaps and bounds%[]%極迅速地,飛躍地%

by lack of：因缺乏 因無

by itself | 單獨地 孤零地 獨立地 自動地 | by lack of | 因缺乏 因無 | by leap and bounds | 飛躍地

by land：由陸路

179. by boat 坐小船 | 180. by land 由陸路 | 181. by sea 由海路

by land：表示"走陸路

by train表示"乘火車"; | by land表示"走陸路"; | by horse表示"騎馬"等等.

carriage by land：陸上運輸

carriage by air => 航空運輸 | carriage by land => 陸上運輸 | carriage by rail => 鐵路運輸

disposal by land：陸地處置

disposal by dilution 稀釋處置 | disposal by land 陸地處置 | disposal by sea 海洋處置

by leaps and bounds：飛速地,突飛猛進地

by itself 自動地;單獨地 | by leaps and bounds 飛速地,突飛猛進地 | by little and little 一點一點地,逐漸地

by leaps and bounds：大幅度地

by accident 偶然,無意中 | by leaps and bounds 大幅度地 | by way of 經(jīng)由

by letter：以書信方式

by lease 以租借方式 | by letter 以書信方式 | by main strength 全靠力氣

by letter：用書面方式,用書面

by law 次要法規(guī),按照法律 | by letter 用書面方式,用書面 | by mail 以郵寄方式,郵寄