Months into the covid-19 response, shortages in N95 surgical face masks
still occur. Many people who aren’t health workers, but still want N95s and
can’t get hold of them, jerry-rig homemade cloth masks, which researchers say
are less effective.应对新冠疫情已经有几个月了，N95外科...
...前面内容是在河道中收集垃圾后并装船， sensor detect when the
dumpster are full，at which point a text is automatically send to a local operator says
that…想请教这句话这里为何要使用which，因为我觉得这里which后面并没有引导一个定语从句。所以我...
...它被翻译为：Traveling in Beijing, you must do two
things: climbing the Great Wall and tasting Beijing roast duck. 我想问的是traveling in Beijing这个现在分词，是事件意义吗？现在分词的事件意义不应该是发生了的事吗？这个句子用现在分词作状语如果...
...ing with better sleep in those with insomnia, perhaps because it can relax the
body.过去的研究曾将深夜听音乐与改善失眠者的睡眠质量联系在一起，这或许是因为听音乐可以让身体放松。请问：1. late-night music listening中，late-night
music 是listening的...
句子：A student should be given the right to decide whether or not to learn a foreign language.问题1：whether or not 的词性、用法（前后形式）是什么？问题2：whether or not 在此处，是否有更好的表达方式（换到其他位置），同时保持意思不变？感谢...
Republican Rep. John Rutherford of Florida purchased between $1,001 and $15,000 worth of Raytheon stock on February 24 this year — the day Russia started its operation in Ukraine.佛罗里达州共和党议员约翰·卢瑟福在今年2月24日购买了价值1001美元至15000美元范围的雷神...
"I never see the night myself, master - nor yet I don't expect to-what would do that," answered Jerry.“我自己从来没见过这样的夜晚，大爷，也不想再遇上-一不知道会出什么事！”杰瑞回答。为什么这一句nor yet I don't expect to不倒装？
...ved intelligence reports of three suicide bombers,all young women,crossing the Nigerian border into northern Cameroon,请问老师：那个 crossing 做什么成份呢？为什么要用 crossing？crossing 的主语是 women？如果去掉逗号可以改成 women cross...是吗？非常感谢！第...