比如These chairs are designed to stack easily,为什么不用 are designed to be stacked easily?
è¿æ¯å 为 to stack ç¨å¨è¿ä¸ªå¥åéçæææ¯âéå èµ·æ¥âï¼to form a stackï¼çææãä¹å°±æ¯è¯´ï¼æ¤
åçå½¢ç¶ç»æéå®éå ãå¥åæ¬èº«å¹¶æ²¡æâ被éå âçææãæ以ä¸å¿
说æ to be stacked easilyã
be designed to åé¢å½ç¶å¯ä»¥æ¥è¢«å¨è¯æãå¦ï¼
Wheelchairs are designed to be handled easily by the handicapped.
be designed to åé¢å½ç¶å¯ä»¥æ¥è¢«å¨è¯æãå¦ï¼
Wheelchairs are designed to be handled easily by the handicapped.
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