英 [ˈtɜːnˌdaʊn] 美 [ˈtɜːrnˌdaʊn]
adj. 翻领的；可翻下的；折叠的；衰退的，下降的
n. 翻领；拒绝；低落；萧条
... turnoff关闭（电器） Turndown减少;关小 turnto向……求救 ...
... takeup开始从事；占去，占据 turndown拒绝；关小，调低 turnout结果是，（最后）证明是，制造，生产，关掉 ...
... tryout试验；尝试 turndown关小；调低 turnon打开(电灯、收音机、煤气、自来水等) ...
... takeup开始从事；占去，占据 turndown拒绝；关小，调低 turnout结果是，（最后）证明是，制造，生产，关掉 ...
turnover 翻覆；[贸易] 营业额；流通量；半圆卷饼；失误；adj. 翻过来的；可翻转的
Offers opened turndown service.
为客人提供开夜床服务。
Does turndown service when required.
需要时提供开夜床服务。
The results show that valve-sieve compound trays have smaller turndown ratio and smaller capacity.
试验结果表明：浮阀筛孔复合塔板操作弹性小、气液处理量小；
The new efforts go far beyond coloring books at check-in and teddy bears at turndown.
WSJ: Rosewood Hotels, Hyatt, Wequassett Resort Boost Amenities for Young Children
The R-Club accommodations feature complimentary Wi-Fi, nightly turndown service, plush bathrobes and an exclusive concierge.
Meanwhile, our room-service dinner, turndown service and morning wake-up calls all came without a hitch.